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CAS No. : | 6169-06-8 | MDL No. : | MFCD00064283 |
Formula : | C8H18O | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | - |
M.W : | 130.23 | Pubchem ID : | - |
Synonyms : |
|
Num. heavy atoms : | 9 |
Num. arom. heavy atoms : | 0 |
Fraction Csp3 : | 1.0 |
Num. rotatable bonds : | 5 |
Num. H-bond acceptors : | 1.0 |
Num. H-bond donors : | 1.0 |
Molar Refractivity : | 41.73 |
TPSA : | 20.23 Ų |
GI absorption : | High |
BBB permeant : | Yes |
P-gp substrate : | No |
CYP1A2 inhibitor : | No |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -5.04 cm/s |
Log Po/w (iLOGP) : | 2.62 |
Log Po/w (XLOGP3) : | 2.9 |
Log Po/w (WLOGP) : | 2.34 |
Log Po/w (MLOGP) : | 2.22 |
Log Po/w (SILICOS-IT) : | 1.97 |
Consensus Log Po/w : | 2.41 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 2.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -2.14 |
Solubility : | 0.934 mg/ml ; 0.00717 mol/l |
Class : | Soluble |
Log S (Ali) : | -2.99 |
Solubility : | 0.135 mg/ml ; 0.00103 mol/l |
Class : | Soluble |
Log S (SILICOS-IT) : | -2.12 |
Solubility : | 0.999 mg/ml ; 0.00767 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 0.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 1.9 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P233-P260-P261-P264-P271-P280-P302+P352-P304-P304+P340-P305+P351+P338-P312-P321-P332+P313-P337+P313-P340-P362-P403-P403+P233-P405-P501 | UN#: | N/A |
Hazard Statements: | H315-H319-H335 | 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 |
---|---|---|
93% | With di-isopropyl azodicarboxylate; triphenylphosphine; In tetrahydrofuran; toluene; at 20℃;Product distribution / selectivity; | After (S)-2-octanol (300 mg, 2.30 mmol), triphenylphosphine (728 mg, 2.76 mmol), benzoic acid (338 mg, 2.76 mmol), and THF (12 ml) were added to a 50 ml flask, a 40% azodicarboxylic acid diisopropyl ester-toluene solution (1.45 ml, 2.76 mmol) dissolved in THF (6 ml) was added dropwise thereto at 20C, and the reaction was allowed to proceed for two hours. Water (0.5 mL) was added, and concentration was carried out. Then, water (10 ml) was added to the solution, and extraction was carried out using diethyl ether (10 ml, * 2). Then, the organic layer was washed with water (10 ml) and saturated salt water (10 ml), and dehumidified with anhydrous magnesium sulfate. Subsequently, a crude product obtained by concentration was purified by column chromatography (silica gel, 10% ethyl acetate-hexane solution) to give (R)-2-benzoyloxyoctane as a colorless liquid substance (503 mg, yield: 93%/(S)-2-octanol). 1H NMR (600 MHz, CDCl3): delta 7.97 (d, J = 7.6 Hz, 2H), 7.47 (t, J = 7.6 Hz, 1H), 7.36 (t, J = 7.6 Hz, 2H), 5.08 (m, 1H), 1.66 (m, 1H), 1.53 (m, 1H), 1.35-1.18 (m, 11H), 0.80 (t, J = 6.9 Hz, 3H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
95% | With di-isopropyl azodicarboxylate; triphenylphosphine In dichloromethane at 25℃; for 2h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
65% | Stage #1: (S)-2-Octanol; diethyl N-tert-butyloxycarbonylphosphoramidate With di-isopropyl azodicarboxylate; triphenylphosphine In tetrahydrofuran at 20 - 25℃; for 2h; Stage #2: toluene-4-sulfonic acid In ethanol for 12h; Heating; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
96% | With azodicarboxylic acid bis(2-methoxyethyl) ester; triphenylphosphine; In toluene; at 20℃;Product distribution / selectivity; | After (S)-2-octanol (300 mg, 2.30 mmol), triphenylphosphine (725 mg, 2.76 mmol), 4-nitrobenzoic acid (463 mg, 2.76 mmol), and toluene (12 ml) were added to a 50 ml flask, azodicarboxylic acid bis(2-methoxyethyl) ester (648 mg, 2.76 mmol) dissolved in toluene (6 ml) was added dropwise thereto at 20C, and the reaction was allowed to proceed for 3.5 hours. Water (10 mL) was added, and separation was carried out. Then, the aqueous layer was extracted using toluene (10 mL, * 1). The resulting organic layer was collectively washed with water (10 mL) and saturated salt water (10 ml), and dehumidified with anhydrous magnesium sulfate. Subsequently, a crude product obtained by concentration was purified by column chromatography (silica gel, 5% ethyl acetate-hexane solution) to give (R)-2-(4-nitrobenzoyloxy)octane as a pale yellow liquid substance (615 mg, yield: 96%/(S)-2-octanol). 1H NMR (600 MHz, CDCl3): delta 8.26 (d, J = 8.6 Hz, 2H), 8.18 (d, J = 8.6 Hz, 2H), 5.17 (m, 1H), 1.38-1.26 (m, 11H), 0.85 (t, J = 6.5 Hz, 3H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 2: 1.) sec-BuLi, (-)-Spartein / 1.) Cyclohexan, Isopentan, Ether, -78 deg C, 2.) -78 deg C, 16h 3: 1.) Methansulfonsaeure, 2.) Ba(OH)2*8H2O / 1.) MeOH, reflux, 16h, 2.) reflux, 4h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: pyridine; SOCl2 / -10 °C 2: diethyl ether; lithium / 0 °C 3: diethyl ether |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
158 mg (95%) | In dichloromethane | 3 Methyl (R)-5-chloro-2-fluoro-4-(2-octyloxy)benzoate (S9) Methyl (R)-5-chloro-2-fluoro-4-(2-octyloxy)benzoate (S9) Under a N2 atmosphere, diisopropylazodicarboxylate (DIAD, 146 mg, 0.72 mmol) was added dropwise to a stirred solution of S8 (98 mg, 0.47 mmol), triphenyl phosphine (189 mg, 0.72 mmol) and (S)-2-octanol (95 mg, 0.72 mmol) in dry CH2 Cl2 (10 ml). After stirring at 25° C. for 2 h, the solvent was removed in vacuo, and the oily residue was purified by flash chromatography on silica gel (30% ethyl acetate/toluene) to give 158 mg (95%) of S9 as an oil. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85.3% | With thionyl chloride; In pyridine; dichloromethane; toluene; | Step B(i) S(+)-1-Methylheptyl 4-benzyloxybenzoate 4-Benzyloxybenzoic acid (55 g) was converted to the acid chloride with thionyl chloride (120 ml) as described in example 1, and then reacted with S(+)-2-octanol (31.4 g) in pyridine (150 ml) and toluene (250 ml). The crude, yellow liquid product (80.7 g) was adsorbed on a mixture of alumina (240 g) and silica gel (240 g) from petroleum spirit (60-80) and eluted with a 1:1 mixture of petrol and dichloromethane. The product was obtained as a colourless oil (70.0 g, 85.3% yield). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
76% | With pyridine; thionyl chloride; In toluene; | Step C(iv) S(+)-1-Methylheptyl 6-benzyloxy-2-naphthoate 6-Benzyloxy-2-naphthoic acid (34.7 g) was converted to the acid chloride with thionyl chloride (150 ml) and the crude product (37.0 g) was reacted with S(+)-2-octanol (16.2 g) in toluene (120 ml) and pyridine (65 ml). The crude product was chromatographed over alumina (150 g) and silica gel (150 g) in a 2:1 - mixture of petroleum spirit (60-80) and dichloromethane and eluted with dichloromethane. The naphthoate was obtained as a white solid (38.0 g, 76% theory) mpt 71-73, 99.6% pure by glc. |
76% | With pyridine; thionyl chloride; In toluene; | Step C(iv) s(+)-1-methylheptyl 6-benzyloxy-2-naphthoate 6-Benzyloxy-2-naphthoic acid (34.7 g) was converted to the acid chloride with thionyl chloride (150 ml) and the crude product (37.0 g) was reacted with s(+)-2-octanol (16.2 g) in toluene (120 ml) and pyridine (65 ml). The crude product was chromatographed over alumina (150 g) and silica gel (150 g) in a 2: 1 - mixture of petroleum spirit (60-80) and dichloromethane and eluted with dichloromethane. The naphthoate was obtained as a white solid (38.0 g, 76% theory) mpt 71-73, 99.6% pure by glc. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triphenylphosphine; diethylazodicarboxylate; | (R)-(-)-1-Bromo-3-fluoro-4-(1-methylheptyloxy)benzene (35) Quantities: <strong>[121219-03-2]4-bromo-3-fluorophenol</strong> (34) (7.33 g, 0.038 mol), (S)-(+)-octan-2-ol (5.00 g, 0.038 mol), DEAD (6.69 g, 0.038 mol), triphenylphosphine (10.07 g, 0.038 mol). The experimental procedure was as described for the preparation of compound 5. The product was purified by column chromatography (70% petrol/dichloromethane) to give a colourless oil. Yield: 10.62 g (92%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
49% | With tributylphosphine In dichloromethane at 20℃; Inert atmosphere; enantioselective reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
83% | With dmap; dicyclohexyl-carbodiimide In dichloromethane at 20℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With Novozyme 435; In neat (no solvent); at 45℃; under 760.051 Torr; for 12h;Molecular sieve; Green chemistry; Enzymatic reaction; | General procedure: Racemic 2-pentanol or 2-octanol (36 mmol), fatty acid (54 mmol), and 4 A molecular sieves (6.0 g) were added to a conical flask with a stopper. The reaction was started by the addition of Novozyme 435 (0.18 g). Samples (15 muL) were withdrawn at regular intervals, diluted with n-hexane (0.5 mL) and analyzed as described above. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With Novozyme 435; In neat (no solvent); at 45℃; under 760.051 Torr; for 12h;Molecular sieve; Green chemistry; Enzymatic reaction; | General procedure: Racemic 2-pentanol or 2-octanol (36 mmol), fatty acid (54 mmol), and 4 A molecular sieves (6.0 g) were added to a conical flask with a stopper. The reaction was started by the addition of Novozyme 435 (0.18 g). Samples (15 muL) were withdrawn at regular intervals, diluted with n-hexane (0.5 mL) and analyzed as described above. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 99 % ee 2: 8 % ee 3: 11 % ee 4: 77 % ee | With lipase B from Candida antarctica In toluene at 78℃; for 48h; Enzymatic reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 99 % ee 2: 3 % ee 3: 7 % ee 4: 87 % ee | With lipase B from Candida antarctica In toluene at 78℃; for 48h; Enzymatic reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 73% 2: 86% | In ethyl acetate at 70 - 78℃; for 18h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
51% | With Candida antarctica lipase B; In acetone; at 35℃; for 3h;Resolution of racemate; Enzymatic reaction; | General procedure: The amount of CALB beads necessary to perform each enzymatickinetic resolution (20 mg) was first embedded in n-hexane(1 mL) for 1 hour, then filtered and washed three times with acetone(3 0.5 mL). After filtration, the beads were used withoutdrying to carry out the enzymatic reaction.The enzymatic reactions began with the addition of a stirredsolution of acylating agent (0.41 mmol) and racemic sec-alcohol(0.41 mmol) in 0.8 mL of distilled acetone to 20 mg of CALB (Novozym435). Reactions were carried out in 4 mL glass screw-capvials placed in an incubator at 35 C and 170 rpm, for the timerequired to reach 50% of conversion. The optimal reaction timefor each enzymatic kinetic resolution was previously determinedby GC analysis of several aliquots (100 lL) withdrawn from theenzymatic reaction at different time intervals. Both the aliquotsand the complete reactions were treated as follows: (i) the enzymewas filtered off and acetone was evaporated under reduced pressure;(ii) the unreacted (S)-enriched-alcohol was extracted withEt2O, passed through a pipette sized column with silica, and driedunder reduced pressure; (iii) the remainder of the enzymatic resolution,containing the attached (R)-enantiomer and the ionic acid,was resuspended in 1 mL of a 4 M solution of KOH in methanoland stirred for 30 min at 50 C; (iv) the (R)-enriched-alcohol wasextracted with Et2O, passed through a pipette size column with silica,and dried under reduced pressure. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
59% | Stage #1: ethyl 4-hydroxy-4-biphenyl carboxylate With triphenylphosphine In tetrahydrofuran at 0℃; for 0.0833333h; Stage #2: (S)-2-Octanol With diethylazodicarboxylate In tetrahydrofuran; toluene at 20℃; for 17h; |