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CAS No. : | 4358-64-9 | MDL No. : | MFCD00075210 |
Formula : | C4H8O3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | SSYDTHANSGMJTP-ZXZARUISSA-N |
M.W : | 104.10 | Pubchem ID : | 641773 |
Synonyms : |
|
Chemical Name : | cis-Tetrahydrofuran-3,4-diol |
Num. heavy atoms : | 7 |
Num. arom. heavy atoms : | 0 |
Fraction Csp3 : | 1.0 |
Num. rotatable bonds : | 0 |
Num. H-bond acceptors : | 3.0 |
Num. H-bond donors : | 2.0 |
Molar Refractivity : | 22.64 |
TPSA : | 49.69 Ų |
GI absorption : | High |
BBB permeant : | No |
P-gp substrate : | No |
CYP1A2 inhibitor : | No |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -7.91 cm/s |
Log Po/w (iLOGP) : | 0.75 |
Log Po/w (XLOGP3) : | -1.38 |
Log Po/w (WLOGP) : | -1.26 |
Log Po/w (MLOGP) : | -1.45 |
Log Po/w (SILICOS-IT) : | -0.11 |
Consensus Log Po/w : | -0.69 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 2.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | 0.38 |
Solubility : | 252.0 mg/ml ; 2.42 mol/l |
Class : | Highly soluble |
Log S (Ali) : | 0.84 |
Solubility : | 716.0 mg/ml ; 6.88 mol/l |
Class : | Highly soluble |
Log S (SILICOS-IT) : | 0.95 |
Solubility : | 936.0 mg/ml ; 8.99 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 0.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 2.34 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P260-P264-P270-P301+P312+P330-P314-P501 | UN#: | N/A |
Hazard Statements: | H302-H373 | Packing Group: | N/A |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
10 %Chromat. | With 5-nonanol; methyltrioxorhenium(VII) In dodecane; benzene at 140℃; for 45 h; Sealed tube | General procedure: CH3ReO3 (0.036 mmol), Glycol (0.36 mmol) and and 0.022 mmol dodecane (internal standard), 5-nonanol (0.68 mmol) were mixed in anhydrous benzene (2 mL) in a 1.5 mL thick walled glass tube fitted with Teflon screw-cap/plunger (Ace Glass), and a spin bar was added. The reaction mixture was heated at 90-150 °C in a preheated oil bath for 24-95 h. The mixture was cooled to room temperature, and an aliquot removed for GC-MS analysis. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
65% | With toluene-4-sulfonic acid; at 135℃; for 2.5h; | 24.4 g (200 mmol) of erythritol were added to a 250 mL round bottom flask equipped with a magnetic stir bar. The temperature was set to 135 C until erythritol melted. Then 1.90 g (5 mol%) of p-toluene sulfonic acid were added and the mixture was stirred for 2.5 hours. After that time elapsed, the mixture was cooled to 90 C and then stirred for 1 hour. After that it was cooled to room temperature and 3.36 g (2 mol%) of sodium bicarbonate were added along with 30 g of silica gel. 150 mL of ethyl acetate were added to the mixture and it was stirred for 1 hour. The solids were removed by filtration and washed with an additional 100 mL of ethyl acetate. The solution was then concentrated and a light yellow oil remained. The product was then purified by distillation a follows: a round bottom flask was fitted to a distillation apparatus containing a fractionating column, a reflux condenser, and a collecting flask. The system was heated to 175 C under reduced pressure (0.5 torr) for 6 hours. After that time had elapsed, 20.0 g of c/s-1 ,4-anhydroerythritol was collected (65% yield). 1H NMR (CDCh): d ppm 3.66 (dd, J = 9.6, 5.0 Hz, 2 H), 3.85 (dd, J = 9.5, 4.9 Hz, 2 H), 4.19 (br. s., 2 H), 4.23 (br. s., 2 H). 13C NMR (CDCh): d ppm 70.9, 72.3. Further characterization is provided in FIGs. 27A-B. |
With sulfuric acid; In chloroform; | (1) Preparation of cis-3,4-dihydroxytetrahydrofuran To 20 g of 50% sulfuric acid, 10 g of erythritol was added, and the mixture was heated and reacted under reflux for 15 hours. Then, the reaction solution was diluted by an addition of 40 ml of water, and then sulfuric acid was removed by passing the solution through a column (5 cm*50 cm) of an anion exchange resin (Diaion SA-20, manufactured by Mitsubishi Kasei Corporation). Then, the solution was concentrated, and the syrup thereby obtained was subjected to extraction treatment with chloroform for 10 hours by means of a Soxhlet extractor. The extract solution was concentrated, and the residue was distilled to obtain 3.5 g of cis-3,4-dihydroxytetrahydrofuran having a boiling point of from 86-88 C./0.1 mmHg. | |
In water; | Production Example 1 Production of 1,4-Anhydroerythritol: Dehydration Reaction Step One gram of erythritol, 4 g of water and 0.15 g of "Amberlyst 70" (product name) as a catalyst were placed in an autoclave, and reacted under conditions of an argon pressure of 5 MPa, 160 C., and 24 hours, to provide 1,4-anhydroerythritol. |
With silicotungstic acid hexacosahydrate; at 115℃; for 5h; | As a dehydration catalyst, using tungsten silicide 26 acid hydrate, was synthesized by dehydration reaction of the sorbitol isosorbide. Specific synthesis procedure is as follows. That is, reflux condenser, moisture determination receiver, 100 ml four neck flask fitted with Teflon coated thermocouple, sorbitol (99% chemical reagent [kishida[kishida]) D - 40mmol, tungstic acid hydrate (99% chemical reagent [kishida[kishida]) silicate 26 4mmol, tetrahydropyran (Tokyo chemical reagent 98%) 50 ml made of PFA and the stirring element is loaded. The, oil bath (oil bath temperature) using the reactor temperature controller 115 C heated, while stirring the contents were stirred to a dehydration reaction. 5 after a lapse of time, the reactor is cooled, organic solvent phase was collected with a pipette. 50 ml (oil bath temperature) in addition to the tetrahydropyran-catalyst remaining in 85 C 1 hours, the catalyst was extracted isosorbide included in phase. The organic solvent phase (99% pure chemical reagent wako) was added as an internal standard substance diphenyl ether, in the presence of pyridine in 20 min (gas chromatogram for pure drug wako) is heated by the 70 C N - [torimechirushiriruimidazoru[torimechirushiriruimidazoru], analysis samples were prepared. Capillary gas chromatograph (0.25 μm [ajirentotekunoroji[ajirentotekunoroji], 0.250mm Φ × 60m) mounted DB-a 1 products were analyzed. The results are shown in table 1. As shown in table 1, with respect to the amount of sorbitol, after the dehydration reaction of the organic solvent phases from 46mol %, catalyst phase extracted from the organic solvent phase 20mol %, 66mol % isosorbide was obtained according. | |
71%Chromat. | In water; at 299.84℃;Kinetics; | The aqueous erythritol solution (concentration: 0.5 mol dm-3) wastreated in a batch reactor for 30 and 60 min at 523 K to obtain 0.4 and0.8% yields of 1,4-anhydroerythritol, respectively, indicating that theintramolecular dehydration hardly proceeded in water at 523 K. At573 K, the dehydration proceeded in water and 1,4-anhydroerythritolwas obtained as the sole product as confirmed by GC-FID analysis. Theerythritol dehydration profile at 573 K is shown in Fig. 1 (a). The yieldof 1,4-anhydroerythritol for 8 and 14 min were 6 and 10%, respectively,at 573 K which increased with an increase in reaction time (theinitial formation rate was 0.50 mmol h-1) and became constant at 71%.The product recovery after 180 min was 80% (Fig. 1c). Yamaguchiet al. studied the dehydration of several sugar alcohols, such as galactitol,xylitol, ribitol, L-arabitol, erythritol and threitol (concentration0.5 mol dm-3), in high-temperature liquid water at 523-573 K, andreported that the final recovery values decreased with an increase inreaction temperature because of the degradation and/or polymerizationof reactants and products [18,20]. The intramolecular dehydration,degradation and/or polymerization of erythritol proceeded in liquidwater at 573 K (Scheme 1). The rate constants were calculated by thefitting the data with a least square method based on the followingequations, |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
62% | In toluene; for 24h;Heating / reflux; | Synthesis of Di-p-toluenesulfonic acid salt ofbis-glycine-1,4- <strong>[4358-64-9]anhydroerythritol</strong> diester (Compound 1.3); Using a previously published method (Gomurashvili, Z, et al. J.M.S.-Pure Appl. Chem. (2000), 37:215-227) Compound 1.3 was synthesized as shown in the following scheme:H N X /- I TosOH ft (θ) ftToluene, u u reflux(Compound 1.3)Glycine (24.92g, 0.332 mol), p-toluenesulfonic acid monohydrate (69A6 g, 0.365 mol) and 1,4-<strong>[4358-64-9]anhydroerythritol</strong> (17.28 g, 0.165 mol) in 300 mL of toluene were charged in a flask equipped with a Dean-Stark apparatus and overhead stirrer. The heterogeneous reaction mixture was heated to reflux for about. 24 h until 12.6 mL <n="46"/>(0.697 mol) of water evolved. The reaction mixture was then cooled to room temperature, filtered, washed with acetone and recrystallized twice from a mixture methanol/2-propanol at 1 :2 volume ratio. White powder with mp = 224C in 62% yield was collected. 1H NMR (DMSO-^6): δ - 2.29 (s, 6H, Ar-CH3), 3.76-3.78 (d,d, 2η, O-CH2-CH), 3.90 (s, 4H, -CO-CH2-NH3+), 3.97-4,00 (d,d 2H, 0-CH2-CH), 5.45 (s, 2H, O-CH=), 7.13 (d, 4η, Ar)5 7.51 (d, 4H, Ar), 8.28 (s, 6H, -NH3+). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
99% | With sodium periodate; In water; for 18h; | . To 1,4-<strong>[4358-64-9]anhydroerythritol</strong> (5 g, 1 eq., 48 mmol) in water (70 mL) was added NaIO4 (5.1 g, 0.5 eq., 24 mmol). The resulting reaction was allowed to stir for 18 h, then MeCN (70 mL) was added. The resulting reaction was allowed to stir for 30 min. then the reaction mixture was filtered and concentrated in vacuo. The crude product was used in the following step without any further purification (4.9 g, 99%). UPLC-MS (method B): Rt. 0.47 min (TIC); ionization ES+103 [M+H]+. |
With sodium periodate; In water; at 0 - 25℃; for 12h; | Compound 54; Compound 54 was prepared following the procedure described in T. Med. Chem. 1993, 36, 1384 (herein incorporated by reference in its entirety for all purposes).To solution of Compound 53 (0.550 g, 5.28 mmol) (Sigma- Aldrich) in H2O (8.8 mL) at 0 0C was added NaIC>4 (1.016 g, 4.75 mmol). The mixture was allowed to slowly warm to 25 C and stirred for 12 hours. Solid NaHCCb was added to the reaction mixture until pH 7. CHCb (16 mL) was added and the mixture was allowed to stir for 5 minutes. The mixture was filtered and the solid was washed with CHCb (6 mL). The combined H2O/CHCI3 solution was used directly in the next step without further purification. | |
With sodium periodate; In water; at 4℃; for 20h;Cooling with ice; | Dissolved (S)-4,5,6,7-tetrahydro-benzothiazole-2,6-diamine tartrate trihydrate (80.0 g, 214.25 mmol) in 50 mL of 2 M HCl, giving a dark gray solution. To this was added decolorizing charcoal (20 g). The mixture stirred for 30 min. Filtered the mixture and washed with 20 mL H2O. The filtrate was heated at 50 0C with stirring. Solid NaOH was added slowly until the pH was basic. Cooing to room temperature followed by <n="145"/>refrigeration for 2h gave a white ppt. Filtered the white ppt and placed it in a vacuum drying oven overnight at 40 0C. Collected the material giving 25.19 g of (S)-4, 5,6,7- tetrahydro-benzothiazole-2,6-diamine. 1H NMR showed pure freebase.Suspended (S)-4,5,6,7-tetrahydro-benzothiazole-2,6-diamine (20.0 g, 118.2 mmol) in 200 mL of CH2Cl2 and DIPEA (36.9 mL, 200.0 mmol) was added. The mixture remained heterogeneous and BOC-ON ( 29.2 g, 118.7 mmol) was added. The mixture stirred overnight. LC-MS analysis indicated the desired product along with one major DAD peaks. Diluted with 200 mL CH2Cl2. Quenched with 100 mL of saturated NH4Cl. Washed with 2x100 mL of H2O and 1x100 mL of brine. Dried organic phase with MgSO4, filtered and concentrated. Applied to a SiO2 column and purified (50% EtOAC/hexanes then 0-5% MeOH/CH2C12) to give mixed fractions and pure product. Repurifed the mixed fractions to give 32.6 ((S)-2-Amino-4,5,6,7-tetrahydro-benzothiazol-6-yl)-carbamic acid tert-butyl ester.Dissolved ((S)-2-Amino-4,5,6,7-tetrahydro-benzothiazol-6-yl)-carbamic acid tert-butyi ester (32.6 g, 121.02 mmol) in 300 mL Of CH2Cl2. To this was added DIPEA (41.8 mL, 240 mmol). The mixture was cooled to 4 0C. To this was added the benzyl chloro formate (17.8 mL, 125 mmol). The mixture stirred overnight. TLC analysis indicated some starting material remaining. Added 0.3 eq more of chloroformate and 0.3 eq. more of DIPEA. Stirred for 4 h. TLC indicated remaining starting material Quenched with 200 mL of saturated NH4Cl. Washed with 2x200 mL Of H2O, 200 mL OfNa2CO3 and 1x200 mL of brine. Dried organic phase with MgSO4, filtered and concentrated. Applied to a SiO2 column and purified (5:5 CH2Cl2/hexanes to 9:1 CH2Cl2/Me0H) to give two main fractions. 1H NMR analysis indicated that both fractions were acceptable and they were combined to give 44.5 g of ((S)-6-tert-butoxycarbonylamino-4,5,6,7-tetrahydro- benzothiazol-2-yl)-carbamic acid benzyl ester. 3.06 g of S. M recovered 9%.Dissolved ((S)-6-tert-butoxycarbonylamino-4,5,6,7-tetrahydro-benzothiazol-2-yl)- carbamic acid benzyl ester in 20 mL Of CH2Cl2. Added 20 mL of TFA. Stirred for 1 h. LC- MS analysis indicated complete deprotection of BOC group. Concentrated to give 46.0 g <n="146"/>of ((S)-6-amino-4,5,6,7-tetrahydro-benzothiazol-2-yl)-carbamic acid benzyl ester trifluoroacetate as pale yellow solid.Dissolved sodium periodate (47.1 g, 220 mmol) in 400 mL of H2O. The mixture was placed in an ice bath at 4 0C and (3S,4R)-tetrahydro-furan-3,4-diol (18.4 mL, 224.5 mmol) was added. Over a period of a few minutes, a thick white ppt. formed. The mixture stirred for 20 h. Added 200 mL of CH3CN. The mixture was filtered and the ppt. rinsed with 200 mL Of CH3CN. The filtrate containing (2-oxo-ethoxy)-acetaldehyde was used directly in the next reaction.Dissolved ((S)-6-amino-4,5,6,7-tetrahydro-benzothiazol-2-yl)-carbamic acid benzyl ester trifluoroacetate ( 10.0 g, 23.9 mmol) in crude dialdehyde solution. The mixture stirred for 30 min. To this was added NaBH3CN (18.8 g, 299.16 mmol). The mixture was sealed and stirred for 36 h. LC-MS analysis indicated the desired morpholine product. Filtered the heterogeneous mixture and concentrated the filtrate. Dissolved residue in 5% HCl/MeOH and passed through pre-rinsed 50X2-200 Dowex acidic ion exchange resin. The column was rinsed with 1x150 mL of 5% HCl, 2x150 mL H2O, 2x125 mL of MeOH. The compound was liberated with 4x150 mL elutions of 10%NH4θH/MeOH and concentrated. Dissolved ppt. from initial reaction, in 5% HCl/MeOH and passed through Dowex acidic ion exchange resin. The column was rinsed with 1x150 mL of 5% HCl, 2x150 mL H2O, 2x125 mL of MeOH. The compound was liberated with 4x150 mL elutions of10%NH4θH/MeOH. Concentrated with previous batch to give 4.62 g. Observed white residue ion exchange medium. Rinsed with 4x100 mL Of CH2Cl2 to give an additional 3.4 g. Combined to give 8.02 g of ((S)-6-morpholin-4-yl-4,5,6,7-tetrahydro-benzothiazol-2- yl)-carbamic acid benzyl ester.Dissolved ((S)-6-morpholin-4-yl-4,5,6,7-tetrahydro-benzothiazol-2-yl)-carbamic acid benzyl ester (7.46 g, 20.00 mmol) in 25 mL of 33% HBr/AcOH. Stirred mixture for 48 h. LC-MS indicated complete deprotection. Added 200 mL OfEt2O resulting in a pale orange ppt. Filtered to give 7.46 mg of (S)-6-Morpholin-4-yl-4,5,6,7-tetrahydro-benzothiazol-2- ylaminedihydrobromide a light brown solid. <n="147"/>[187] 3,4-Dimethoxy-N-[3-((S)-6-morpholin-4-yl-4,5,6,7-tetrahydro-benzothiazol-2- ylcarbamoyl)-benzyl]-benzamide Prepared by the method described in Example 23... |
With sodium periodate; In water; for 12h; | Example 151 3- [4- (2, 3-DIFLUORO-PHENYL)-ISOXAZOL-5-YL]-5- (4-MORPHOLI N-4-YL-CYCLOHEX-1-ENYL)-LH-PYRROLO [2, 3-B] PYRIDINE (139) [0403] A solution of 1,4-<strong>[4358-64-9]anhydroerythritol</strong> (208 mg, 2 mmol) in water was treated with sodium periodate (400 mg, 4 mmol) for 12 h, transferred to a solution of 4- 3- [4- (2, 3-DIFLUORO-PHENYL)-ISOXAZOL-5-YL]-LH-PYRROLO [2, 3-B] PYRIDIN-5-YL}-CYCLOHEX-3-ENYLAMINE (50 mg, 0.12 mmol) in methanol (5 ml). The resulting solution was treated with sodium cyanoborohydride. After the reaction was completed, TFA was added, and the mixture was concentrated and purified by HPLC to give the morpholine product (20 mg) in 36% yield. [0404] 1H NMR (500 MHz, DMSO-d6) 8 : 12.43 (s, 1H, NH), 9.63 (br. s, MsOH), 8.86 (s, 1H), 8.46 (d, 1H), 7.82 (d, 1H), 7.69 (d, 1H), 7.51 (q, 1H), 7.34 (q, 1H), 7.29 (q, 1H), 5.99 (d, 1H), 4.05 (d, 2H), 3.72 (t, 2H), 3.56-3. 48 (m, 3H), 3.18 (m, 2H), 2.61 (m, 2H), 2.44 (m, 2H), 2.33 (m, 1H), 2.32 (s, 3H, MsOH), 1.75 (ddd, 1H). LC/MS: Rt 2.22 mins.; m/e 463.4 (M+H), 461.4 (M-H). | |
With sodium periodate; In water; acetonitrile; for 18h; | 1,4-<strong>[4358-64-9]anhydroerythritol</strong> (34 mg, 0.33 mmol) dissolved in a water/ CH3CN mixture (1:1; 4 mL) and the mixture is maintained under stirring for 18 hours. 4-amino-7-methoxy-3-(4-methoxyphenyl)isoquinolin-1(2H)-one (compound 1) (100 mg, 0.33 mmol) and NaBH3CN (63 mg, 1 mmol) are then added to the solution of 2,2′-oxybis(acetaldehyde) prepared previously. Then, 3 drops of acetic acid are added and the medium is stirred for 3 hours at ambient temperature. The reaction is stopped by the addition of 10 mL of water. The medium is extracted with 3×10 mL of dichloromethane. The organic phases are washed with 3×10 mL of water, dried over MgSO4 and concentrated under vacuum. The residue is purified by silica gel column chromatography with dichloromethane-ethanol (100/0 to 98/2) as eluent in order to produce successively i) the compound 7-methoxy-3-(4-methoxyphenyl)-4-morpholinoisoquinolin-1(2H)-one 49 (10 mg, 8%) in the form of a white solid, mp>270 C.; 1H NMR (CDCl3): 8.18 (1H, br s), 7.99 (1H, d), 7.83 (1H, dd), 7.37 (3H, m), 7.03 (2H, d), 3.97 (3H, s), 3.91 (3H, s), 3.72 (4H, m), 2.90 (2H, m), 2.75 (2H, m); MS 367 (M+H); and ii) the compound 4-(2-(2-hydroxyethoxy)ethylamino)-7-methoxy-3-(4-methoxyphenyl)isoquinolin-1(2H)-one 50 (15 mg, 12%) in the form of a white solid, mp 139 C.; 1H NMR (CDCl3): 8.71 (1H, br s), 7.89 (1H, d), 7.82 (1H, s), 7.45 (2H, d), 7.34 (1H, dd), 7.01 (2H, d), 3.94 (3H, s), 3.87 (3H, s), 3.60 (2H, t), 3.49 (2H, t), 3.38 (2H, t), 3.03 (2H, t), 1.75 (1H, br s), MS 385 (M+H). | |
With sodium periodate; In water; at 0 - 25℃; for 12h; | Compound 54 To solution of Compound 53 (0.550 g, 5.28 mmol) (Sigma-Aldrich) in H20 (8.8 mL) at 0 C was added NaI04 (1.016 g, 4.75 mmol). The mixture was allowed to slowly warm to 25 C and stirred for 12 hours. Solid NaHC03 was added to the reaction mixture until pH 7. CHC13 (16 mL) was added and the mixture was allowed to stir for 5 minutes. The mixture was filtered and the solid was washed with CHC13 (6 mL). The combined H20/CHC13 solution was used directly in the next step without further purification. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
100% | With triethylamine; In dichloromethane; at 0℃; for 1h; | A. (3R,4S)-tetrahydrofuran-3,4-diyl dimethanesulfonate Methanesulfonyl chloride (1.642 mL, 21.13 mmol) in DCM (5 mL) was added to a solution of (3R,4S)-tetrahydrofuran-3,4-diol (0.787 mL, 9.61 mmol) and Et3N (4.05 mL, 28.8 mmol) in DCM (10 mL) at 0 C. After stirring at 0 C. for 1 h, the mixture was diluted with DCM. The organic layer was washed with saturated aqueous NaHCO3, dried, and concentrated in vacuo to give the title compound as a yellowish white solid (2.5 g, 100%). 1H NMR (400 MHz, CDCl3) δ ppm 3.09-3.20 (m, 6H), 3.90-4.07 (m, 2H), 4.10-4.22 (m, 2H), 5.19 (ddd, J=5.31, 3.54, 1.77 Hz, 2H). |
With triethylamine; In dichloromethane; at 0℃; for 0.166667h; | Triethylamine (12.0 mL) and methanesulfonyl chloride (3.6 mL) were sequentially added dropwise to a solution of 1,4-<strong>[4358-64-9]anhydroerythritol</strong> (5.0 g) in methylene chloride (50 mL) under ice cooling, followed by stirring for 10 minutes under ice cooling. The reaction mixture was diluted with methylene chloride, and the diluted mixture was washed with 10% aqueous HCl, saturated aqueous sodium hydrogencarbonate, and saturated brine. The organic layer was dried over sodium sulfate anhydrate, and the solvent was distilled away under reduced pressure, to thereby give the title compound (9.2 g).1H-NMR(CDCl3) δ:3.15(6H, s), 3.99(2H, dd, J=11.2, 2.5Hz), 4.16(2H, dd, J=11.2, 4.6Hz), 5.10-5.20(2H, m). | |
With sodium chloride; sodium hydrogencarbonate; triethylamine; In dichloromethane; | REFERENTIAL EXAMPLE 169 (3R,4S)-4-[(Methylsulfonyl)oxy]tetrahydro-3-furanyl methanesulfonate: Triethylamine (12.0 ml) and methanesulfonyl chloride (3.6 ml) were successively added dropwise to a solution of 1,4-<strong>[4358-64-9]anhydroerythritol</strong> (5.0 g) in methylene chloride (50 ml) under ice cooling, and the mixture was stirred for 10 minutes under ice cooling. The reaction mixture was diluted with methylene chloride and washed with 10% hydrochloric acid, a saturated aqueous solution of sodium hydrogencarbonate and saturated aqueous solution of sodium chloride. After the resultant organic layer was dried over anhydrous sodium sulfate, the solvent was distilled off under reduced pressure to obtain the title compound (9.2 g). 1H-NMR (CDCl3) δ: 3.15(6H,s), 3.99(2H,dd,J=11.2, 2.5 Hz), 4.16(2H,dd,J=11.2, 4.6 Hz), 5.10-5.20(2H,m). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In ethyl acetate; N,N-dimethyl-formamide; mineral oil; | Step 1 cis-3-Cyclopropylmethoxy-4-hydroxytetrahydrofuran To a stirred solution of cis-3,4-dihydroxytetrahydrofuran (5.8 g, 56 mmol) and bromomethylcyclopropane (5.0 g, 37 mmol) in DMF (100 mL) at 0 C. was added sodium hydride (1.6 g of a 60% suspension in mineral oil, 40 mmol) in portions over a period of 2 h. The resulting solution was stirred at 0 C. for 1 h and then at ambient temperature for 18 h. The solution was concentrated in vacuo and partitioned between EtOAc and water. The organic phase was separated, dried over MgSO4, filtered, and concentrated in vacuo. The residue was purified by flash column chromatography using 1:1 EtOAc:hexanes as eluant to give the title compound as a colorless liquid (1.8 g; TLC Rf=0.4, 1:1 EtOAc:hexanes). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In 1,4-dioxane; N-methyl-acetamide; | Example 14 4-[cis-(4-Hydroxytetrahydrofuran-3-yl)oxy]-2-(1-piperazinyl)quinazoline: To a solution of 2,4-dichloroquinazoline (1.0 g) and 1,4-<strong>[4358-64-9]anhydroerythritol</strong> (manufactured by Aldrich Co.) (0.52 g) in dimethylformamide (20 ml) is added gradually 60% sodium hydride (in oil) (0.2 g) under water-cooling, and the mixture is stirred at room temperature for one hour. The reaction mixture is poured into ice-water, and extracted with ethyl acetate. The ethyl acetate solution is washed with water, dried over anhydrous sodium sulfate and evaporated to dryness under reduced pressure. The resulting residue is dissolved in dioxane (20 ml), and the mixture is slowly added dropwise to a solution of piperazine (2.2 g) in dioxane (20 ml) with stirring at 70 C., and the mixture is stirred at the same temperature for one hour. The reaction mixture is poured into ice-water and extracted with chloroform. The extract is washed with water, dried over anhydrous sodium sulfate, and is evaporated to dryness under reduced pressure. The resulting residue is purified by medium pressure column chromatography (eluent, chloroform:methanol=20:1, 5:1, v/v), and the resulting crystals are recrystallized from ethanol to give 4-[cis-(4-hydroxytetrahydrofuran-3-yl)oxy]-2-(1-piperazin-yl)quinazoline (0.31 g). NMR (300 MHz, CDCl3, δppm): 2.14 (2H, br), 2.93 (4H, m), 3.83 (4H, m), 3.90 (1H, dd, J=5, 9.5 Hz), 4.05 (1H, dd, J=5, 10 Hz), 4.10 (1H, dd, J=5.5, 9.5 Hz), 4.28 (1H, dd, J=6, 10 Hz), 4.63 (1H, q, J=5 Hz), 5.54 (1H, dt, J=5, 6 Hz), 7.16 (1H, ddd, J=1, 7, 8 Hz), 7.50 (1H, dt, J=1, 8.5 Hz), 7.61 (1H, ddd, J=1.5, 7, 8.5 Hz), 7.92 (1H, dd, J=1.5, 8 Hz) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In tetrahydrofuran; hexane; | EXAMPLE 2 48 g (1 mol) of sodium hydride (50% dispersion in oil) was dispered in 250 ml of hexane, and the supernatant was removed. Then, 250 ml of dry THF was added and dispersed again, and the supernatant was removed. Then, 250 ml of dry THF was again added to substitute for hexane. Then, the dispersion was cooled to 0 C., and then a solution prepared by dissolving 52 g (0.5 mol) of cis-3,4-dihydroxytetrahydrofuran obtained in step (1) of Example 1 in 75 ml of dry THF, was dropwise added thereto. Six hours later, 149.2 g (1 mol) of methyl iodide was further dropwise added, and the mixture was reacted at room temperature for 3 days under stirring. After completion of the reaction, by-product sodium iodide was removed by filtration, and the filtrate was concentrated. The residue was distilled to obtain 30.0 g of cis-3,4-dimethoxytetrahydrofuran as identified in Table 1. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
28% | To a solution of 1,4-<strong>[4358-64-9]anhydroerythritol</strong> (1.9 g, 18 mmol) in water (10 ml) was added sodium periodiate (0.7 g, 18 mmol) and the reaction stirred for 16 h. Acetonitrile (10 ml) was added to the mixture and the reaction was filtered to remove precipitated salts. (R)-1-benzyl-pyrrolidin-3-ylamine (1.0 g, 6 mmol) was added as a solution in acetonitrile (5 ml) to the filtrate, followed by sodium cyanoborohydride (1.1 g, 18 mmol). The reaction was stirred for 10 minutes after which time the reaction the acetonitrile removed by evaporation, the mixture made basic by addition of NaHCO3, and repeatedly extracted with CH2Cl2. The combined organic extracts were dried (Na2SO4) and concentrated. Purification by flash column chromatography (CH2Cl2: MeOH 9:1) afforded the title product (0.4 g, 28%) as a brown gum. MS: 247.2(MH+). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
58.2% | With triethylamine; In dichloromethane; at 0℃; for 2h; | Step 1: Synthesis of (2S)-4-hydroxytetrahydrofuran-3-yl 2-(6-methoxynaphthalen-2-yl)propanoate (CD1-L14-OH) A solution of naproxen acid chloride (CD1-1, freshly prepared from 10.0 g (43.4 mmol) of naproxen using oxalyl chloride/DMF method) in 20 mL of DCM was added to a stirred solution of 1,4-<strong>[4358-64-9]anhydroerythritol</strong> (HO-L14-OH, 9.1 g (~7.1 mL), 86.9 mmol) and TEA (18.0 mL, 130.0 mmol) in 20 mL of DCM at 0 C. over a period of 30 minutes and the mixture was stirred at 0 C. for 1.5 h when TLC analysis of the mixture indicated formation of a major mono adduct along with the expected minor bis-adduct. The mixture was diluted with saturated sodium bicarbonate (~100 mL) and the organic layer was separated. The aqueous layer was extracted with DCM (2*100 mL). The organic extracts were combined, dried over anhydrous Na2SO4, filtered and concentrated to give 12.0 g of crude residue which was purified by column chromatography (silica gel 150-300 mesh, the bis-adduct and other non-polar impurities were eluted with 5-10% EtOAc in petroleum ether and the desired mono-adduct was eluted with 13-15% EtOAc in petroleum ether) to afford the title compound as a white solid. Yield: 8.0 g (58.2%); 1H NMR (CDCl3, 300 MHz) (Mixture of diastereomers): δ 1.609, 1.614 (two overlapping doublets, J=6.9, 7.2 Hz, 3H), 3.52-3.72 (m, 2H), 3.77-4.10 (m, 5H), 3.91 (s, 3H), 4.30 (q, J=5.7, 5.4 Hz, 0.5H), 4.40 (q, J=5.7, 5.4 Hz, 0.5H), 5.07-5.19 (m, 1H), 7.09-7.20 (m, 2H), 7.37-7.44 (m or distorted doublet, 1H), 7.66-7.76 (m, 3H); MS m/z: 317.1 [M+H]+, 339.1 [M+Na]+, 355.1 [M+K]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
76% | With PEDOT(2+)*Cl(1-)*FeCl4(1-); In toluene; for 20h;Inert atmosphere; Reflux; | The reaction of erythritol (7, 120 mg, 1 mmol) and 2 (570.0 mg, 0.5 mmol) under identical conditions gave 79.0 mg (0.8 mmol, 76%) of 8,refPreviewPlaceHolder38 as a colorless oil. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
94% | With dimethyltin dichloride; triethylamine; In dichloromethane; at 20℃; for 1h; | Representative procedure. To the mixture of diol 1a (0.5 mmol), triethylamine (1.5 equiv), and dimethyltin dichloride (10 mol %) in CH2Cl2 (3 mL) was added TESCl 2a (1.5 equiv). The mixture was stirred for 1 h at rt. After water was added, the resulting mixture was extracted with ethyl acetate and the combined organic layers were dried with anhydrous magnesium sulfate. After filtration, the volatile components were removed with a rotary evaporator. Purification of the crude product through silica gel column chromatography gave 3aa in 99% yield. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
A supension of NaH (34.4 g, 861 mmol, 60% in mineral oil) in THF (700 mL) was cooled to 0C and a solution of (meso)-tetrahydrofuran-3,4-diol (1) (89.6 g, 861 mmol) in DMSO (350 mL) was added carefully (-10 mL/min). After the evolution of hydrogen has ceased, the cooling bath was removed and the mixture was stirred mechanically for two hours at ambient temperature. The reaction vessel was cooled again with an ice bath and benzyl bromide (102 mL, 861 mmol) in THF (150 mL) was added (-17 mL/min). After stirring overnight the reaction was quenched in portions with water (overall 2.4 L) and extracted into diethylether (overall 2.4 L). The combined organic layers were dried over magnesium sulphate and the solvents were evaporated to give 163 g of crude alcohol 2, which was used without further purification. | ||
4) (5RS,9RS)-9-(Benzyloxy)-7-oxa-1 ,3-diazaspiro[4.4]nonane-2,4-dioneA supension of NaH (34.4 g, 861 mmol, 60% in mineral oil) in THF (700 ml.) was cooled to 0C and a solution of (meso)-tetrahydrofuran-3,4-diol (1 ) (89.6 g, 861 mmol) in DMSO (350 ml.) was added carefully (-1 0 mL/min). After the evolution of hydrogen has ceased, the cooling bath was removed and the mixture was stirred mechanically for two hours at ambient temperature. The reaction vessel was cooled again with an ice bath and benzyl bromide (102 ml_, 861 mmol) in THF (150 ml.) was added (-17 mL/min). After stirring overnight the reaction was quenched in portions with water (overall 2.4 L) and extracted into diethylether (overall 2.4 L). The combined organic layers were dried over magnesium sulphate and the solvents were evaporated to give 163 g of crude alcohol 2, which was used without further purification. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
0.055 g | With potassium tert-butylate; In N,N-dimethyl-formamide; at 90℃; for 6h; | Example 58a (CIS- racemic mixture): To a solution of Intermediate 30o (0.13 g, 0.37 mmol) in dry DMF (3 mL), potassium tert.butoxide (0.083 g, 0.73 mmol) and commercially available 1 ,4-<strong>[4358-64-9]anhydroerythritol</strong> (0.06 mL, 0.73 mmol) were added and mixture heated at 90 C for 6 h. Solvent was evaporated, DCM and water added. Organ ics were separated, washed with a saturated solution of ammonium chloride, evaporated. The crude was purified by flash chromatography (eluent Cy/EtOAc 90:10 to 0:100) to give the desired compound (0.055 g). HPLC-MS (Method 13): Rt =2.94 min MS: m/z = 438 (M+H)+ - single stereoisomer a): |
0.055 g | With potassium tert-butylate; In N,N-dimethyl-formamide; at 90℃; for 6h; | To a solution of Intermediate 300 (0.13 g, 0.37 mmol) in dry DMF (3 mE), potassium tert.butoxide (0.083 g, 0.73 mmol) and commercially available 1,4-anhydroerythri- tol (0.06 mE, 0.73 mmol) were added and mixture heated at 90 C for 6 h. Solvent was evaporated, DCM and water added. Organics were separated, washed with a saturated solution of ammonium chloride, evaporated. The crude was purified by flash chromatography (eluent Cy/EtOAc 90:10 to 0:100) to give the desired compound (0.055 g).10853] HPLC-MS (Method 13): R2.94 mm10854] MS: mIz438 (M+H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
10%Chromat. | With 5-nonanol; methyltrioxorhenium(VII); In dodecane; benzene; at 140℃; for 45h;Sealed tube; | General procedure: CH3ReO3 (0.036 mmol), Glycol (0.36 mmol) and and 0.022 mmol dodecane (internal standard), 5-nonanol (0.68 mmol) were mixed in anhydrous benzene (2 mL) in a 1.5 mL thick walled glass tube fitted with Teflon screw-cap/plunger (Ace Glass), and a spin bar was added. The reaction mixture was heated at 90-150 C in a preheated oil bath for 24-95 h. The mixture was cooled to room temperature, and an aliquot removed for GC-MS analysis. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydride; In N,N-dimethyl-formamide; mineral oil; at 20℃; | A mixture of 2,4-difluoronitrobenzene (2.81 ml; 25.7 mmol), (3S,4S)-4-(tert-butyl-dimethyl-silanyloxy)-tetrahydro-furan-3-ol (Intermediate Vll.3, 7.00 g; 25.6 mmol THF(100 ml), and sodium hydride (60% dispersion in mineral oil; 1 .03 g; 25.7 mmol) isstirred at RT over night. DCM is added and the mixture is extracted with water. Theorganic layer is separated, dried with magnesium sulphate, filtered and evaporated. The residue is purified by FC (DCM).Yield: 6.07 g (66%), ESI-MS: m/z = 358 (M+H)Synthesis from 2,4-difluoronitrobenzene and 1 ,4-<strong>[4358-64-9]anhydroerythritol</strong> (2 eq.) applying DMF as solvent.ESl-MS: m/z = 244 (M+H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
87% | General procedure: To a solution of the corresponding diol (5 mmol) in dry toluene(10 mL), under a nitrogen atmosphere, was added triisopropylborate (1.17 mL, 5.1 mmol) via syringe and the mixture stirredunder mild reflux conditions for approximately 20 min. Whenthe mixture became homogeneous, a solution of amino alcohol indry toluene (10 mL) was added. The mixture was refluxed for20 min and during this time a portion of toluene along with evolvingisopropanol was removed by distillation (about 10 mL). Next,toluene (10 mL) was added to the distillation flask and the contentsevaporated again to make sure all the isopropanol had beenremoved. After stirring for 20 min, the mixture was cooled to roomtemperature and a white precipitate of the spiroborate esterappeared. The product was filtered and recrystallized from tolueneas a white crystalline powder. 4.3.4 (1R,2S,3R,5R)-2-(1',3',2'-Dioxaborolan-(4'-3,5'-4-tetrahydrofuran)-2'-yloxy)-apopinan-3-amine 4 White solid; mp 223-228 C; [α]D20 = -28.5 (c 0.6, THF); 1H NMR (CDCl3): δ = 1.01 (d, J = 10.6 Hz, 1H), 1.06 (s, 3H), 1.24 (s, 3H), 1.73 (ddt, J = 13.8, 5.8, 1.4 Hz, 1H), 1.99 (q, J = 5.0 Hz, 1H), 2.26-2.32 (m, 1H), 2.36-2.40 (m, 1H), 2.61 (ddd, J = 14.1, 9.6, 4.8 Hz, 1H), 3.36 (td, J = 10.8, 2.9 Hz, 2H), 3.76 (s, 1H), 3.98 (dd, J = 15.1, 10.6 Hz, 4H), 4.53 (dd, J = 8.1, 4.4 Hz, 1H), 4.67-4.73 (m, 2H); 13C NMR (CDCl3): δ = 22.16, 26.34, 27.35, 34.68, 37.75, 40.96, 44.66, 45.13, 76.30, 76.46, 76.68, 78.45, 78.54; 11B NMR (CDCl3): δ = 10.80; Anal. calcd for C13H22BNO4: C, 58.45, H, 8.30, N, 5.24; found: C, 58.37, H, 8.42, N, 5.15. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
40% | Production of ethyl 3-hydroxy-3,6-dihydro-2H-pyran-4-carboxylate To an aqueous solution (400 mL) of (3R, 4S)-tetrahydrofuran-3,4-diol (100 g) was added sodium periodate (225 g) at 0C, and the mixture was stirred at room temperature for 1 hr. An aqueous solution (50 mL) of potassium carbonate (13.2 g) was added at room temperature, and an aqueous solution (100 mL) of ethyl diethylphosphonoacetate (322 g) was added dropwise over 2 hr. Then, an aqueous solution (800 mL) of potassium carbonate (384 g) was added dropwise over 2 hr. The reaction mixture was stirred at room temperature for 24 hr, and extracted with ethyl acetate. The extract was dried over anhydrous magnesium sulfate and the solvent was evaporated under reduced pressure. The residue was distilled under reduced pressure (110-130C/3-4 mmHg). The obtained crude product was subjected to silica gel column chromatography (hexane/ethyl acetate=1:1) to give the title compound (66.5 g, 40%) as a colorless liquid. 1H-NMR (CDCl3) δ: 1.33 (3H, t, J = 7.0 Hz), 2.85 (1H, J = 5.0 Hz), 3.67-3.75 (1H, m), 3.91-3.98 (1H, m), 4.10-4.45 (5H, m), 7.07 (1H, d, J = 2.6 Hz). | |
25.8 g | Step A While keeping the internal temperature at 20 C. or less using ice cooling, (3R,4S)-tetrahydrofuran-3,4-diol (45.0 g) was added dropwise to an aqueous solution (220 mL) of sodium periodate (97.0 g), and the mixture was then stirred overnight at room temperature. Sodium bicarbonate (7.26 g) and ethyl(diethoxyphosphoryl)acetate (60.6 mL) were added at room temperature to the reaction mixture, and the mixture was stirred at the same temperature for three hours. Sodium bicarbonate (84.0 g) was added to the reaction mixture, and the mixture was stirred overnight at an internal temperature of 50 C. The reaction mixture was cooled to room temperature, and then the solids were eliminated by filtration. The solids were washed with THF, and the washings were combined with the filtrate. Sodium chloride was added to the mixture and extraction performed with ethyl acetate. The aqueous phase was extracted twice further with an ethyl acetate/THF liquid mixture, and the extracts were combined and dried with magnesium sulfate, and the solvent was eliminated by distillation under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/hexane) and ethyl 3-hydroxy-3,6-dihydro-2H-pyran-4-carboxylate (25.8 g) was obtained as a straw-colored oily substance. 1H NMR (300 MHz, CDCl3) δ 1.33 (3H, t, J=7.2 Hz), 2.79 (1H, d, J=4.9 Hz), 3.72 (1H, dd, J=11.9, 3.2 Hz), 3.95 (1H, dd, J=11.7, 3.0 Hz), 4.18-4.43 (5H, m), 7.04-7.08 (1H, m). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
57%Spectr.; 17%Spectr. | With di(oxo){1,5-dithiapentanediyl-2,2'-bis(4,6-di-tert-butylphenolato)}molybdenum; at 20 - 200℃; for 18h;Glovebox; Sealed tube; | General procedure: A thick-walled glass tube with a screw cap was charged in the glovebox sequentially with the catalyst (10μmol), <strong>[4358-64-9]anhydroerythritol</strong> and 3-octanol in the given ratio. If applicable, the given amount of an additional solvent was added. A magnetic stirring bar was added and the mixture was stirred for 10min at ambient temperature before being inserted into a preheated oil bath. After the given reaction time, the glass tube was taken from the heating bath and cooled down rapidly with cold water. Mesitylene (23μL) was added as an internal standard and the mixture was vigorously shaken. Upon homogenization, an aliquot (roughly 0.05mL) of the mixture was taken up in 0.5mL of CDCl3 and analyzed by 1H NMR spectroscopy. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
18%Spectr. | With di(oxo){1,4-dithiabutanediyl-2,2'-bis(4,6-di-tert-butylphenolato)}molybdenum; at 20 - 200℃; for 18h;Glovebox; Sealed tube; | General procedure: A thick-walled glass tube with a screw cap was charged in the glovebox sequentially with the catalyst (10μmol), <strong>[4358-64-9]anhydroerythritol</strong> and 3-octanol in the given ratio. If applicable, the given amount of an additional solvent was added. A magnetic stirring bar was added and the mixture was stirred for 10min at ambient temperature before being inserted into a preheated oil bath. After the given reaction time, the glass tube was taken from the heating bath and cooled down rapidly with cold water. Mesitylene (23μL) was added as an internal standard and the mixture was vigorously shaken. Upon homogenization, an aliquot (roughly 0.05mL) of the mixture was taken up in 0.5mL of CDCl3 and analyzed by 1H NMR spectroscopy. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
9.9 g | (1) To a solution of the compound 1 (10 mL) in water (120 mL) was added sodium periodate (13 g), and the reactionmixture was stirred for 18 hours at room temperature. To the reaction mixture was added acetonitrile (180 mL), andthe precipitate was removed by filtration. The filtrate was concentrated under reduced pressure, acetonitrile (180mL) was added to the resulting residue, and an insoluble substance was removed by filtration. The filtrate wasconcentrated under reduced pressure, and the resulting residue was dissolved in water, and then acetone-1,3-dicarboxylic acid (17.8 g) and conc. hydrochloric acid (6.6 mL) were added to the solution. Then, to the reactionmixture was added dropwise benzylamine at room temperature over 1 hour, and the reaction mixture was stirredfor 2.5 hours after heating to 50 C. The reaction mixture was cooled to room temperature, and then an aqueoussolution of 1 mol/L of sodium hydroxide was added thereto, a pH of the reaction mixture was adjusted to 9-10, andthe reaction mixture was extracted with chloroform. The organic layer was dried over potassium carbonate, and thesolvent was evaporated under reduced pressure. The resulting residue was suspended and washed in a mixedsolution of ethyl acetate-hexane, taken by filtration, and dried to give the compound 2 (9.9 g) as a colorless solid.MS (ESI) 232 [M+H]+ |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogen In water at 200℃; for 31h; Autoclave; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydride; In N,N-dimethyl-formamide; at 20℃; for 5h;Inert atmosphere; | General procedure: Step 1. To a solution of (3R,4S)-tetrahydrofuran-3,4-diol (260 mg, 2.5 minol) and 6-fluoro-N-(6-(o-tolyl)-5-(trifluoromethyl)pyrid in-2-yl)pyrid ine-2-sulfonamide (206 mg, 0.5 minol) in DMF(Volume: 20 mL) was added NaH (240 mg, 10 minol) under nitrogen atmosphere. Themixture stirred at rt for 5 h and quenched with aq. citric acid, ethyl acetate added, washedwith 10% citric acid, water, aq. NaHCO3, brine (x3), and dried (Na2SO4). The crude materialwas purified by flash silica gel chromathotography (hexanes/ethyl acetate 0-100% gradient) to afford rac-6-[(3RS,4SR)-4-hydroxyoxolan-3-yl]oxy}-N-[6-(2-methylphenyl)-5- (trifluoromethyl) pyridin-2-yl]pyridine-2-sulfonamide (180 mg, 71 % yield) as white crystals.LCMS: Rt 1.47 min mlz 496.2 [M+H]. 1H NMR (400 MHz, DMSO-d6) 0 11.81 (s, 1 H), 8.21(d, J = 8.9 Hz, 1H), 7.91 (m, 1H), 7.56 (dd, J = 0.6, 7.3 Hz, 1H), 7.47 (s, 1H), 7.32 (t, J = 7.3Hz, 1H), 7.22 (m, 2H), 7.11 (d, J = 8.3 Hz, 1H), 7.05 (m, 1H), 5.07 (dd, J = 5.2, 14.7 Hz, 1H),4.95 (m, 1H), 4.21 (m, 1H), 3.82 (m, 2H), 3.54 (m, 2H), 1.79 (m, 3H).NMR (376 MHz, DMSO-d6) 0 -57.17 Cs). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogen; In 1,4-dioxane; at 20 - 140℃; under 7500.75 - 60006 Torr; for 24h;Autoclave; | General procedure: A stirrer tip, 150 mg of the catalyst (ReOX-Ag / CeO2) obtained in Production Example 1 weighed, 4 g of 1,4-dioxane, and 1 g of 1,4-<strong>[4358-64-9]anhydroerythritol</strong> were placed in a glass inner cylinder for autoclave. I put it in.The inner cylinder for the autoclave was placed in a 190 mL autoclave (high-pressure batch reactor) and covered.Next, the operation of filling 1 MPa of hydrogen into the autoclave and then exhausting the gas was repeated three times to expel the air inside the autoclave.The autoclave was filled so as to exhibit 8 MPa at 140 C. and 5 MPa at room temperature.Subsequently, the autoclave is set in the magnetic stirrer additional heating device and heated so that the temperature inside the reactor (inside the autoclave) becomes 140 C.The mixture was stirred at 250 rpm for 4 hours (Reaction time = 4 h) while maintaining the reaction temperature at 140 C.Then, the mixture was cooled to room temperature, the hydrogen inside the autoclave was released, and the pressure was released.The solution after the reaction is subjected to FID analysis using gas chromatography (gas chromatograph device: "GC-2025" (manufactured by Shimadzu Corporation), GC column: TC-WAX, detector: FID) and GC-MS. analyzed.From this, the conversion rate of 1,4-<strong>[4358-64-9]anhydroerythritol</strong> and the selectivity of the product were calculated.The analysis results are shown in Table 1. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogen; In 1,4-dioxane; at 20 - 140℃; under 7500.75 - 60006 Torr; for 4h;Autoclave; | General procedure: A stirrer chip, 300 mg of the catalyst (ReOX-Au / CeO2) obtained in Production Example 21 weighed, 4 g of 1,4-dioxane, and 500 mg of glycerin were placed in a glass inner cylinder for autoclave.The inner cylinder for the autoclave was placed in a 190 mL autoclave (high-pressure batch reactor) and covered.Next, the operation of filling 1 MPa of hydrogen into the autoclave and then exhausting the gas was repeated three times to expel the air inside the autoclave. The autoclave was filled so as to exhibit 8 MPa at 140 C. and 5 MPa at room temperature.Subsequently, the autoclave is set in a magnetic stirrer additional heating device, heated so that the temperature inside the reactor (inside the autoclave) becomes 140 C., and the reaction temperature is maintained at 140 C. for 32 hours at 250 rpm (Reaction time). = 32h) Stirred.Then, the mixture was cooled to room temperature, the hydrogen inside the autoclave was released, and the pressure was released.The analysis of the solution after the reaction was carried out in the same manner as in Example 1.From this, the conversion rate of glycerin and the selectivity of the product were calculated. The analysis results are shown in Table 9. |
[ 84709-85-3 ]
(3S,4S)-Tetrahydrofuran-3,4-diol
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[ 473-85-8 ]
(3R,4R)-Tetrahydrofuran-3,4-diol
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[ 86087-23-2 ]
(S)-(+)-3-Hydroxytetrahydrofuran
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[ 22554-74-1 ]
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P309 | IF exposed or if you feel unwell: |
P310 | Immediately call a POISON CENTER or doctor/physician. |
P311 | Call a POISON CENTER or doctor/physician. |
P312 | Call a POISON CENTER or doctor/physician if you feel unwell. |
P313 | Get medical advice/attention. |
P314 | Get medical advice/attention if you feel unwell. |
P315 | Get immediate medical advice/attention. |
P320 | |
P302 + P352 | IF ON SKIN: wash with plenty of soap and water. |
P321 | |
P322 | |
P330 | Rinse mouth. |
P331 | Do NOT induce vomiting. |
P332 | IF SKIN irritation occurs: |
P333 | If skin irritation or rash occurs: |
P334 | Immerse in cool water/wrap n wet bandages. |
P335 | Brush off loose particles from skin. |
P336 | Thaw frosted parts with lukewarm water. Do not rub affected area. |
P337 | If eye irritation persists: |
P338 | Remove contact lenses, if present and easy to do. Continue rinsing. |
P340 | Remove victim to fresh air and keep at rest in a position comfortable for breathing. |
P341 | If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing. |
P342 | If experiencing respiratory symptoms: |
P350 | Gently wash with plenty of soap and water. |
P351 | Rinse cautiously with water for several minutes. |
P352 | Wash with plenty of soap and water. |
P353 | Rinse skin with water/shower. |
P360 | Rinse immediately contaminated clothing and skin with plenty of water before removing clothes. |
P361 | Remove/Take off immediately all contaminated clothing. |
P362 | Take off contaminated clothing and wash before reuse. |
P363 | Wash contaminated clothing before reuse. |
P370 | In case of fire: |
P371 | In case of major fire and large quantities: |
P372 | Explosion risk in case of fire. |
P373 | DO NOT fight fire when fire reaches explosives. |
P374 | Fight fire with normal precautions from a reasonable distance. |
P376 | Stop leak if safe to do so. Oxidising gases (section 2.4) 1 |
P377 | Leaking gas fire: Do not extinguish, unless leak can be stopped safely. |
P378 | |
P380 | Evacuate area. |
P381 | Eliminate all ignition sources if safe to do so. |
P390 | Absorb spillage to prevent material damage. |
P391 | Collect spillage. Hazardous to the aquatic environment |
P301 + P310 | IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. |
P301 + P312 | IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. |
P301 + P330 + P331 | IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. |
P302 + P334 | IF ON SKIN: Immerse in cool water/wrap in wet bandages. |
P302 + P350 | IF ON SKIN: Gently wash with plenty of soap and water. |
P303 + P361 + P353 | IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. |
P304 + P312 | IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell. |
P304 + P340 | IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. |
P304 + P341 | IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing. |
P305 + P351 + P338 | IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. |
P306 + P360 | IF ON CLOTHING: Rinse Immediately contaminated CLOTHING and SKIN with plenty of water before removing clothes. |
P307 + P311 | IF exposed: call a POISON CENTER or doctor/physician. |
P308 + P313 | IF exposed or concerned: Get medical advice/attention. |
P309 + P311 | IF exposed or if you feel unwell: call a POISON CENTER or doctor/physician. |
P332 + P313 | IF SKIN irritation occurs: Get medical advice/attention. |
P333 + P313 | IF SKIN irritation or rash occurs: Get medical advice/attention. |
P335 + P334 | Brush off loose particles from skin. Immerse in cool water/wrap in wet bandages. |
P337 + P313 | IF eye irritation persists: Get medical advice/attention. |
P342 + P311 | IF experiencing respiratory symptoms: call a POISON CENTER or doctor/physician. |
P370 + P376 | In case of fire: Stop leak if safe to Do so. |
P370 + P378 | In case of fire: |
P370 + P380 | In case of fire: Evacuate area. |
P370 + P380 + P375 | In case of fire: Evacuate area. Fight fire remotely due to the risk of explosion. |
P371 + P380 + P375 | In case of major fire and large quantities: Evacuate area. Fight fire remotely due to the risk of explosion. |
Storage | |
Code | Phrase |
P401 | |
P402 | Store in a dry place. |
P403 | Store in a well-ventilated place. |
P404 | Store in a closed container. |
P405 | Store locked up. |
P406 | Store in corrosive resistant/ container with a resistant inner liner. |
P407 | Maintain air gap between stacks/pallets. |
P410 | Protect from sunlight. |
P411 | |
P412 | Do not expose to temperatures exceeding 50 oC/ 122 oF. |
P413 | |
P420 | Store away from other materials. |
P422 | |
P402 + P404 | Store in a dry place. Store in a closed container. |
P403 + P233 | Store in a well-ventilated place. Keep container tightly closed. |
P403 + P235 | Store in a well-ventilated place. Keep cool. |
P410 + P403 | Protect from sunlight. Store in a well-ventilated place. |
P410 + P412 | Protect from sunlight. Do not expose to temperatures exceeding 50 oC/122oF. |
P411 + P235 | Keep cool. |
Disposal | |
Code | Phrase |
P501 | Dispose of contents/container to ... |
P502 | Refer to manufacturer/supplier for information on recovery/recycling |
Physical hazards | |
Code | Phrase |
H200 | Unstable explosive |
H201 | Explosive; mass explosion hazard |
H202 | Explosive; severe projection hazard |
H203 | Explosive; fire, blast or projection hazard |
H204 | Fire or projection hazard |
H205 | May mass explode in fire |
H220 | Extremely flammable gas |
H221 | Flammable gas |
H222 | Extremely flammable aerosol |
H223 | Flammable aerosol |
H224 | Extremely flammable liquid and vapour |
H225 | Highly flammable liquid and vapour |
H226 | Flammable liquid and vapour |
H227 | Combustible liquid |
H228 | Flammable solid |
H229 | Pressurized container: may burst if heated |
H230 | May react explosively even in the absence of air |
H231 | May react explosively even in the absence of air at elevated pressure and/or temperature |
H240 | Heating may cause an explosion |
H241 | Heating may cause a fire or explosion |
H242 | Heating may cause a fire |
H250 | Catches fire spontaneously if exposed to air |
H251 | Self-heating; may catch fire |
H252 | Self-heating in large quantities; may catch fire |
H260 | In contact with water releases flammable gases which may ignite spontaneously |
H261 | In contact with water releases flammable gas |
H270 | May cause or intensify fire; oxidizer |
H271 | May cause fire or explosion; strong oxidizer |
H272 | May intensify fire; oxidizer |
H280 | Contains gas under pressure; may explode if heated |
H281 | Contains refrigerated gas; may cause cryogenic burns or injury |
H290 | May be corrosive to metals |
Health hazards | |
Code | Phrase |
H300 | Fatal if swallowed |
H301 | Toxic if swallowed |
H302 | Harmful if swallowed |
H303 | May be harmful if swallowed |
H304 | May be fatal if swallowed and enters airways |
H305 | May be harmful if swallowed and enters airways |
H310 | Fatal in contact with skin |
H311 | Toxic in contact with skin |
H312 | Harmful in contact with skin |
H313 | May be harmful in contact with skin |
H314 | Causes severe skin burns and eye damage |
H315 | Causes skin irritation |
H316 | Causes mild skin irritation |
H317 | May cause an allergic skin reaction |
H318 | Causes serious eye damage |
H319 | Causes serious eye irritation |
H320 | Causes eye irritation |
H330 | Fatal if inhaled |
H331 | Toxic if inhaled |
H332 | Harmful if inhaled |
H333 | May be harmful if inhaled |
H334 | May cause allergy or asthma symptoms or breathing difficulties if inhaled |
H335 | May cause respiratory irritation |
H336 | May cause drowsiness or dizziness |
H340 | May cause genetic defects |
H341 | Suspected of causing genetic defects |
H350 | May cause cancer |
H351 | Suspected of causing cancer |
H360 | May damage fertility or the unborn child |
H361 | Suspected of damaging fertility or the unborn child |
H361d | Suspected of damaging the unborn child |
H362 | May cause harm to breast-fed children |
H370 | Causes damage to organs |
H371 | May cause damage to organs |
H372 | Causes damage to organs through prolonged or repeated exposure |
H373 | May cause damage to organs through prolonged or repeated exposure |
Environmental hazards | |
Code | Phrase |
H400 | Very toxic to aquatic life |
H401 | Toxic to aquatic life |
H402 | Harmful to aquatic life |
H410 | Very toxic to aquatic life with long-lasting effects |
H411 | Toxic to aquatic life with long-lasting effects |
H412 | Harmful to aquatic life with long-lasting effects |
H413 | May cause long-lasting harmful effects to aquatic life |
H420 | Harms public health and the environment by destroying ozone in the upper atmosphere |
Sorry,this product has been discontinued.
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