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CAS No. : | 29579-11-1 | MDL No. : | MFCD00025471 |
Formula : | C14H13NO2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | HHKNJUHXNDIVFN-UHFFFAOYSA-N |
M.W : | 227.26 | Pubchem ID : | 296051 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P301+P312-P302+P352-P304+P340-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-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 |
---|---|---|
62% | With potassium carbonate; In acetone; for 16h;Heating / reflux; | To a solution of 2-hydroxybenzamide (2.74 g, 20 mmol, 1.0 equiv) and K2CO3 (3.30 g, 24 mmol, 1.2 equiv) in acetone (100 mL) was added benzyl bromide (2.80 mL, 24 mmol, 1.2 equiv) and the reaction heated at reflux for 16 hours. After cooling to room temperature, the solution was filtered and the filtrate was concentrated under reduced pressure. The crude solid was recrystallized from acetone to afford the title compound (2.89 g, 62%) as a white solid: 1H NMR (CDCl3, 600 MHz) delta 5.19 (s, 2H), 5.92 (br s, 1H), 7.05-7.10 (m, 2H), 7.36-7.48 (m, 6H), 7.73 (br s, 1H), 8.23 (d, J=7.8 Hz, 1H); 13C NMR (CDCl3, 150 MHz) delta 71.5, 112.9, 121.3, 121.8, 128.1, 129.0, 129.2, 132.9, 133.6, 135.8, 157.4, 167.2; HRMS (APCI+) calcd for C14H14NO2 [M+H]+ 228.1019, found 228.1042 (error 10.0 ppm). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
21% | With potassium carbonate; potassium iodide; In acetone; for 18h;Reflux; | To amide15(0.80 g, 5.83 mmol), K2CO3(0.97 g, 7.02 mmol) and KI (1.17 g, 7.02 mmol) in acetone (30 mL) was added benzyl chloride (0.81 mL, 7.02 mmol), and the reaction stirred at reflux for 18 h. The solution was cooled and filtered and solvent removed in vacuo. The crude product was recrystallised from acetone to yield6(0.28 g, 21%) as a cream solid, mp 112-114 C (lit. [58] mp 115-116 C). deltaH(CDCl3) 8.25 (1H, dd,J= 7.8, 1.8 Hz, H-6), 7.73 (1H, br s, NH), 7.50-7.37 (6H, m, Ar-H), 7.13-7.06 (2H, m, Ar-H), 5.81 (1H, br s, NH), 5.20 (2H, s, CH2). deltaC(CDCl3) 167.1 (C = O), 157.3 (C), 136.8 (C), 133.6 (CH), 132.9 (CH), 129.2 (2 × CH), 128.9 (CH), 128.1 (2 × CH), 121.7 (CH), 121.3 (C), 112.9 (CH), 71.5 (CH2). LRMSm/z228.2 (100%, M + H). HPLC purity: 100%. These data are in good agreement with literature values [59] |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With H2;Pd on carbon; In methanol; 1-bromo-2,2-dimethoxyethane; acetic acid; | PREPARATION 10 2-(Oxazol-2-yl)-phenol <strong>[29579-11-1]2-Benzyloxybenzamide</strong> (2.0 g, 8.8 mmol) was heated to about 130 C. in bromoacetaldehyde dimethylacetal (10 mL, 85 mmol) under N2 (g) for 3.5 hours. Although pure 2-(2-benzyloxyphenyl)oxazole could be obtained by recrystallization from CHCl3 /CCl4, the entire mixture was usually directly hydrogenated using 10% Pd on carbon (600 mg) at 40 psi of H2 in 1% HOAc in MeOH (100 mL). Following removal of catalyst by filtration and concentration of the filtrate in vacuo the residue was chromatographed on silica (10?5% acetone/hexanes) to afford 2-(oxazol-2-yl)phenol (860 mg; GC-MS m/z 161 (M+)). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; sodium hydroxide; In water; | EXAMPLE 16 Analogously to Example 3, by debenzylation of 18 g of crude 1-[N-[2-(3-carbamoyl-4-hydroxyphenoxy)ethylbenzylamino]-3-[2-[N'-(2-hydroxyethyl)ureidomethyl]phenoxy]-propan-2-ol, after crystallisation from dimethylformamide/ether 1-[2-(3-carbamoyl-4-hydroxyphenoxy)ethylamino]-3-[2-[N'-(2-hydroxyethyl)ureidomethyl]phenoxy]propan-2-ol is obtained having a melting point of 164-166. The starting material can be prepared as follows: 2-benzyloxybenzylamine: In a Soxhlet apparatus 18.4 g of lithium aluminium hydride in 1800 ml of dry ether are boiled under a nitrogen atmosphere at a bath temperature of 70, 5.3 g of <strong>[29579-11-1]2-benzyloxybenzamide</strong> being introduced into the Soxhlet thimble. After 21 hours the reaction mixture is immersed in an ice bath, and 18.4 ml of water, 18.4 ml of 15% sodium hydroxide solution and 55 ml of water are added dropwise in succession, whilst stirring. The temperature may be allowed to rise to a maximum of +10. Stirring of the mixture is then continued at 20 and the resulting precipitate is suction-filtered and washed with ether. The filtrate is concentrated by evaporation in vacuo and the oil remaining is stirred with 500 ml of 10% hydrochloric acid and 400 ml of ether for 2 hours, whilst cooling with ice. The precipitated 2-benzyloxybenzylamine hydrochloride is suction-filtered, washed with water and ether and dried in vacuo. Melting point 190-191. 2-benzyloxybenzyl isocyanate: | |
With hydrogenchloride; sodium hydroxide; In water; | 2-benzyloxybenzylamine In a Soxhlet apparatus 18.4 g of lithium aluminium hydride in 1800 ml of dry ether are boiled under a nitrogen atmosphere at a bath temperature of 70, 5.3 g of <strong>[29579-11-1]2-benzyloxybenzamide</strong> being introduced into the Soxhlet thimble. After 21 hours the reaction mixture is immersed in an ice bath, and 18.4 ml of water, 18.4 ml of 15% sodium hydroxide solution and 55 ml of water are added dropwise in succession, whilst stirring. The temperature may be allowed to rise to a maximum of +10. Stirring of the mixture is then continued at 20 and the resulting precipitate is suction-filtered and washed with ether. The filtrate is concentrated by evaporation in vacuo and the oil remaining is stirred with 500 ml of 10% hydrochloric acid and 400 ml of ether for 2 hours, whilst cooling with ice. The precipitated 2-benzyloxybenzylamine hydrochloride is suction-filtered, washed with water and ether and dried in vacuo. Melting point 190-191. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In Dichlorodifluoromethane; at 50℃; for 3h; | To a stirred solution of <strong>[29579-11-1]2-benzyloxybenzamide</strong> (114 mg, 0.50 mmol, 1.0 equiv) in CH2Cl2 (20 mL) (COCl)2 (129 muL, 1.5 mmol, 3 equiv) was added dropwise at room temperature. The solution was then heated at 50 C. for 3 hours. After cooling to room temperature, the reaction was concentrated in vacuo to afford a light yellow solid. Next, a solution of 5'-amino-N6-tert-butoxycarbonyl-5'-deoxy-2',3'-O-isopropylideneadenosine (244 mg, 0.6 mmol, 1.2 equiv) in CH3CN (10 mL) was added and the resulting mixture was stirred 16 hours at room temperature. The crude reaction was concentrated in vacuo and the residue was partitioned between CH2Cl2 (25 mL) and H2O (25 mL). The aqueous layer was extracted with CH2Cl2 (2×25 mL). The combined organic extracts were dried (Na2SO4) and concentration under reduced pressure. Purification by flash chromatography (7:3 EtOAc/hexanes) afforded the title compound (290 mg, 88%) as a white solid: Rf 0.1 (60:40 EtOAc/hexane); 1H NMR (CDCl3, 600 MHz) delta 1.35 (s, 3H), 1.54 (s, 9H), 1.59 (s, 3H), 3.64-3.71 (m, 2H), 4.41-4.44 (m, 1H), 4.99 (dd, J=6.0, 3.6 Hz, 1H), 5.28 (s, 2H), 5.37 (dd, J=6.0, 3.0 Hz, 1H), 6.12 (d, J=3.0 Hz, 1H), 7.05 (d, J=8.4 Hz, 1H), 7.10 (t, J=7.8 Hz, 1H), 7.35-7.37 (m, 1H), 7.40-7.43 (m, 4H), 7.48 (dt, J=8.4, 1.2 Hz, 1H), 8.05 (br s, 1H, NH), 8.12 (dd, J=7.8, 1.2 Hz, 1H), 8.18 (s, 1H), 8.74 (s, 1H), 8.85 (t, J=6.0 Hz, 1H, NH), 9.97 (s, 1H, NH); 13C NMR (CDCl3, 150 MHz) delta 25.7, 27.5, 28.3, 41.5, 71.8, 81.9, 82.5, 84.2, 85.3, 90.4, 113.5, 115.2, 119.9, 122.1, 122.3, 127.7, 129.1, 129.2, 132.9, 134.9, 135.0, 141.7, 149.7, 150.2, 150.7, 153.4, 153.9, 157.2, 165.9; HRMS (ESI+) calcd for C33H38N7O8 [M+H]+ 660.2776, found 660.2667 (error 16.5 ppm). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
87% | General procedure: Sodium hydride (100 mg) was added to a cooled solution of the appropriate benzamide 14 (500 mg) in anhydrous DMF. Themixture was stirred for 15 min, and the appropriate isocyanate(or isothiocyanate) was added. Stirring was continued at roomtemperature until completion of the reaction monitored by TLC.The mixture was poured into cold water and acidified with 1 NHCl. The precipitate was collected by filtration, washed with waterand dried. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
45% | General procedure: Sodium hydride (100 mg) was added to a cooled solution of the appropriate benzamide 14 (500 mg) in anhydrous DMF. Themixture was stirred for 15 min, and the appropriate isocyanate(or isothiocyanate) was added. Stirring was continued at roomtemperature until completion of the reaction monitored by TLC.The mixture was poured into cold water and acidified with 1 NHCl. The precipitate was collected by filtration, washed with waterand dried. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
40% | General procedure: Sodium hydride (100 mg) was added to a cooled solution of the appropriate benzamide 14 (500 mg) in anhydrous DMF. Themixture was stirred for 15 min, and the appropriate isocyanate(or isothiocyanate) was added. Stirring was continued at roomtemperature until completion of the reaction monitored by TLC.The mixture was poured into cold water and acidified with 1 NHCl. The precipitate was collected by filtration, washed with waterand dried. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
47% | General procedure: Sodium hydride (100 mg) was added to a cooled solution of the appropriate benzamide 14 (500 mg) in anhydrous DMF. Themixture was stirred for 15 min, and the appropriate isocyanate(or isothiocyanate) was added. Stirring was continued at roomtemperature until completion of the reaction monitored by TLC.The mixture was poured into cold water and acidified with 1 NHCl. The precipitate was collected by filtration, washed with waterand dried. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
82% | General procedure: Sodium hydride (100 mg) was added to a cooled solution of the appropriate benzamide 14 (500 mg) in anhydrous DMF. Themixture was stirred for 15 min, and the appropriate isocyanate(or isothiocyanate) was added. Stirring was continued at roomtemperature until completion of the reaction monitored by TLC.The mixture was poured into cold water and acidified with 1 NHCl. The precipitate was collected by filtration, washed with waterand dried. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
95% | With sodium hydroxide; In ethanol; for 6h;Reflux; | General procedure: The mixture of 2-hydroxybenzamide (1 g, 7.3 mmol) and NaOH(0.4 g, 10 mmol) was stirred in EtOH (40 mL). Then, an appropriatealkyl halide (10.95 mmol) was added and the reaction medium wasrefluxed for 6 h. The excess of solvent was evaporated underreduced pressure, leading to a residue, which was triturated withwater, filtered and dried. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
65% | General procedure: Sodium hydride (100 mg) was added to a cooled solution of the appropriate benzamide 14 (500 mg) in anhydrous DMF. Themixture was stirred for 15 min, and the appropriate isocyanate(or isothiocyanate) was added. Stirring was continued at roomtemperature until completion of the reaction monitored by TLC.The mixture was poured into cold water and acidified with 1 NHCl. The precipitate was collected by filtration, washed with waterand dried. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
40% | General procedure: Sodium hydride (100 mg) was added to a cooled solution of the appropriate benzamide 14 (500 mg) in anhydrous DMF. Themixture was stirred for 15 min, and the appropriate isocyanate(or isothiocyanate) was added. Stirring was continued at roomtemperature until completion of the reaction monitored by TLC.The mixture was poured into cold water and acidified with 1 NHCl. The precipitate was collected by filtration, washed with waterand dried. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
55% | With potassium hydroxide; In dimethyl sulfoxide; at 20℃; for 16h; | General procedure: A mixture of <strong>[445-28-3]2-fluorobenzamide</strong> (1a, 69.5 mg, 0.5 mmol), MeOH (ca. 32.0 mg, 1.0 mmol), KOH (56.0 mg, 1.0 mmol) and DMSO (2.0 mL) in a 25 mL screw-capped thick-walled Pyrex tube was stirred at room temperature for 16 h, and then water (10 mL) was added to the reaction mixture with stirring, and the mixture was extracted with ethyl acetate three times (3 * 10 mL). The combined organic phases were dried over Na2SO4 overnight. The filtered solution was concentrated under reduced pressure, and the crude residue was purified by column chromatography on silica gel with the use of petroleum ether/ethyl acetate/trimethylamine (gradient mixture ratio from 6:1:0.05 to 2:1:0.05 in volume) to afford 2aa as a white solid in 80% yield (60.7 mg). |
30% | With potassium hydroxide; In dimethyl sulfoxide; at 20℃; for 16h; | Times the next fluorobenzamide (27.88, 0.2111001), high purity KOH (011 (22.48, 0.4111001), benzyl alcohol (43.28,0.4 mol), DMS0 (200 mL) was added to the reactor and the reaction was stirred at 20 C for 16 hours. After completion of the reaction, the system was added1000 mL of ethyl acetate and washed 4 times with 150 mL of saturated brine. The organic phase was separated and dried over anhydrous sodium sulfate. After filtration, steaming evaporated, and then its loading to the silica gel column for separation. With petroleum ether: ethyl acetate = 3: 1 (volume) Was eluted as an eluent until the product appeared, the solution containing the product was collected and evaporated to dryness.After drying with a vacuum chestnut, o-benzyloxybenzamide pure product, the yield of 30%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
410 mg | In toluene;Schlenk technique; Inert atmosphere; Reflux; | General procedure: The appropriate amide 32a-p, benzhydrazide (40a), or p-toluenesulfonylhydrazide (43a) (1.0 mmol, 1.0 equiv) was placed in a SchlenkKjeldahl reaction flask and the flask was evacuated/argon re-filledthree times. Subsequently, anhyd CH2Cl2 (25 mL) was added and themixture was stirred at r.t. for 10 min before dropwise addition of oxalylchloride (3.0 mmol, 3.0 equiv) followed. The reaction mixturewas then stirred at reflux for 2.5-3.0 h before cooling to r.t. and thesolvent was evaporated in vacuo. Subsequently, the appropriate nucleophile32, 34, 36, 38, 40, 42, 43, or 45 (1.1-1.25 mmol, 1.1-1.25equiv) was rapidly added and the flask was evacuated/argon re-filledbefore anhyd toluene (12 mL) was added. The reaction mixture wasthen stirred at reflux for 2.5-3 h before cooling to r.t. and concentrationto about 1/3 of the initial volume on rotavapor. Hexane was addedto the residue and the obtained precipitate (often sonicated) wascollected by filtration under reduced pressure to yield the crudeproduct. When necessary, the isolated material was purified either bycrystallization from MeOH or flash chromatography on silica gel withhexane-EtOAc as the eluent. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In dichloromethane;Inert atmosphere; Schlenk technique; Reflux; | General procedure: The appropriate amide 32a-p, benzhydrazide (40a), or p-toluenesulfonylhydrazide (43a) (1.0 mmol, 1.0 equiv) was placed in a SchlenkKjeldahl reaction flask and the flask was evacuated/argon re-filledthree times. Subsequently, anhyd CH2Cl2 (25 mL) was added and themixture was stirred at r.t. for 10 min before dropwise addition of oxalylchloride (3.0 mmol, 3.0 equiv) followed. The reaction mixturewas then stirred at reflux for 2.5-3.0 h before cooling to r.t. and thesolvent was evaporated in vacuo. Subsequently, the appropriate nucleophile32, 34, 36, 38, 40, 42, 43, or 45 (1.1-1.25 mmol, 1.1-1.25equiv) was rapidly added and the flask was evacuated/argon re-filledbefore anhyd toluene (12 mL) was added. The reaction mixture wasthen stirred at reflux for 2.5-3 h before cooling to r.t. and concentrationto about 1/3 of the initial volume on rotavapor. Hexane was addedto the residue and the obtained precipitate (often sonicated) wascollected by filtration under reduced pressure to yield the crudeproduct. When necessary, the isolated material was purified either bycrystallization from MeOH or flash chromatography on silica gel withhexane-EtOAc as the eluent. |
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