乙基4-[(5-溴-2-甲基苯甲酰)氨基]-3,5-苯甲酸二甲酯

反应条件: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of ethyl 4-[(5-bromo-2-methyl-benzoyl)amino]-3,5-dimethyl-benzoate (0.5 g, 1.28 mmol), 1,4-dioxa-8-azaspiro(4.5)decane (0.22 g, 1.54 mmol) and Cs2CO3 (1.25 g, 3.84 mmol) in THF (10 ml) is added Pd(OAc)2 (0.04 g, 0.19 mmol) followed by racemic-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (119.7 mg, 0.19 mmol). The reaction mixture is purged with nitrogen for 5 minutes and then heated at 90° C. After 16 hours, the reaction is cooled to ambient temperature and diluted with ammonium chloride and extracted twice with EtOAc. The combined organic layers are dried over sodium sulfate, filtered, and concentrated under reduced pressure. The resulting residue is purified by flash chromatography (silica gel) using 0-100% ethyl acetate in hexane to afford the title compound as a brown solid (0.21 g, 36.2%). Mass spectrum (m/z): 453.2 (M+1). The reaction mixture is purged with nitrogen for 5 minutes the reaction is cooled to ambient temperature diluted with ammonium chloride extracted twice with EtOAc The combined organic layers are dried over sodium sulfate filtered concentrated under reduced pressure The resulting residue is purified by flash chromatography (silica gel)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 5-bromo-2-methyl-benzoic acid (1.35 g, 6.15 mmol) in THF (15 ml), CH2Cl2 (15 ml) and DMF (14.27 μl, 184.57 moles) is added dropwise oxalyl chloride (587.12 μl, 6.77 mmoles) at 0° C. and reaction mixture is slowly allowed to warm to ambient temperature. After 2 hours, the solvent is removed under reduced pressure. To the residue CH2Cl2 (30 ml) is added and reaction mixture is cooled to 0° C., then ethyl 4-amino-3,5-dimethyl-benzoate (1.19 g, 6.15 mmol) is added followed by 4-pyridinamine, N,N-dimethyl-(37.58 mg, 307.61 mmoles) and pyridine (1.49 ml, 18.46 mmoles). The cooling bath is removed and the clear solution is allowed to warm to ambient temperature. After 5 hours, the solvent is removed and the reaction mixture is diluted with ethyl acetate and washed with 1N HCl, saturated solution of sodium bicarbonate, and brine. The organic layers are combined and dried over anhydrous Na2SO4, filtered, and concentrated under reduced pressure. The resulting residue is triturated with hexanes and the resulting solids were collected by filtration to give the title compound as a white solid (1.80 g; 75.2%). Mass spectrum (m/z): 390.2 (M+1). reaction mixture the solvent is removed under reduced pressure To the residue CH2Cl2 (30 ml) is added reaction mixture is cooled to 0° C. The cooling bath is removed to warm to ambient temperature After 5 hours the solvent is removed the reaction mixture is diluted with ethyl acetate washed with 1N HCl, saturated solution of sodium bicarbonate, and brine dried over anhydrous Na2SO4 filtered concentrated under reduced pressure The resulting residue is triturated with hexanes the resulting solids were collected by filtration

反应条件: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of ethyl 4-[(5-bromo-2-methyl-benzoyl)amino]-3,5-dimethyl-benzoate (0.5 g, 1.28 mmol), 1,4-dioxa-8-azaspiro(4.5)decane (0.22 g, 1.54 mmol) and Cs2CO3 (1.25 g, 3.84 mmol) in THF (10 ml) is added Pd(OAc)2 (0.04 g, 0.19 mmol) followed by racemic-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (119.7 mg, 0.19 mmol). The reaction mixture is purged with nitrogen for 5 minutes and then heated at 90° C. After 16 hours, the reaction is cooled to ambient temperature and diluted with ammonium chloride and extracted twice with EtOAc. The combined organic layers are dried over sodium sulfate, filtered, and concentrated under reduced pressure. The resulting residue is purified by flash chromatography (silica gel) using 0-100% ethyl acetate in hexane to afford the title compound as a brown solid (0.21 g, 36.2%). Mass spectrum (m/z): 453.2 (M+1). The reaction mixture is purged with nitrogen for 5 minutes the reaction is cooled to ambient temperature diluted with ammonium chloride extracted twice with EtOAc The combined organic layers are dried over sodium sulfate filtered concentrated under reduced pressure The resulting residue is purified by flash chromatography (silica gel)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 5-bromo-2-methyl-benzoic acid (1.35 g, 6.15 mmol) in THF (15 ml), CH2Cl2 (15 ml) and DMF (14.27 μl, 184.57 moles) is added dropwise oxalyl chloride (587.12 μl, 6.77 mmoles) at 0° C. and reaction mixture is slowly allowed to warm to ambient temperature. After 2 hours, the solvent is removed under reduced pressure. To the residue CH2Cl2 (30 ml) is added and reaction mixture is cooled to 0° C., then ethyl 4-amino-3,5-dimethyl-benzoate (1.19 g, 6.15 mmol) is added followed by 4-pyridinamine, N,N-dimethyl-(37.58 mg, 307.61 mmoles) and pyridine (1.49 ml, 18.46 mmoles). The cooling bath is removed and the clear solution is allowed to warm to ambient temperature. After 5 hours, the solvent is removed and the reaction mixture is diluted with ethyl acetate and washed with 1N HCl, saturated solution of sodium bicarbonate, and brine. The organic layers are combined and dried over anhydrous Na2SO4, filtered, and concentrated under reduced pressure. The resulting residue is triturated with hexanes and the resulting solids were collected by filtration to give the title compound as a white solid (1.80 g; 75.2%). Mass spectrum (m/z): 390.2 (M+1). reaction mixture the solvent is removed under reduced pressure To the residue CH2Cl2 (30 ml) is added reaction mixture is cooled to 0° C. The cooling bath is removed to warm to ambient temperature After 5 hours the solvent is removed the reaction mixture is diluted with ethyl acetate washed with 1N HCl, saturated solution of sodium bicarbonate, and brine dried over anhydrous Na2SO4 filtered concentrated under reduced pressure The resulting residue is triturated with hexanes the resulting solids were collected by filtration

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 5-bromo-2-methyl-benzoic acid (1.35 g, 6.15 mmol) in THF (15 ml), CH2Cl2 (15 ml) and DMF (14.27 μl, 184.57 μmoles) is added dropwise oxalyl chloride (587.12 μl, 6.77 mmoles) at 0° C. and reaction mixture is slowly allowed to warm to ambient temperature. After 2 hours, the solvent is removed under reduced pressure. To the residue CH2Cl2 (30 ml) is added and reaction mixture is cooled to 0° C., then ethyl 4-amino-3,5-dimethyl-benzoate (1.19 g, 6.15 mmol) is added followed by 4-pyridinamine, N,N-dimethyl-(37.58 mg, 307.61 μmoles) and pyridine (1.49 ml, 18.46 mmoles). The cooling bath is removed and the clear solution is allowed to warm to ambient temperature. After 5 hours, the solvent is removed and the reaction mixture is diluted with ethyl acetate and washed with 1N HCl, saturated solution of sodium bicarbonate, and brine. The organic layers are combined and dried over anhydrous Na2SO4, filtered, and concentrated under reduced pressure. The resulting residue is triturated with hexanes and the resulting solids were collected by filtration to give the title compound as a white solid (1.80 g; 75.2%). Mass spectrum (m/z): 390.2 (M+1). reaction mixture the solvent is removed under reduced pressure To the residue CH2Cl2 (30 ml) is added reaction mixture is cooled to 0° C. The cooling bath is removed to warm to ambient temperature After 5 hours the solvent is removed the reaction mixture is diluted with ethyl acetate washed with 1N HCl, saturated solution of sodium bicarbonate, and brine dried over anhydrous Na2SO4 filtered concentrated under reduced pressure The resulting residue is triturated with hexanes the resulting solids were collected by filtration

反应条件: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of ethyl 4-[(5-bromo-2-methyl-benzoyl)amino]-3,5-dimethyl-benzoate (0.5 g, 1.28 mmol), 1,4-dioxa-8-azaspiro(4.5)decane (0.22 g, 1.54 mmol) and Cs2CO3 (1.25 g, 3.84 mmol) in THF (10 ml) is added Pd(OAc)2 (0.04 g, 0.19 mmol) followed by racemic-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (119.7 mg, 0.19 mmol). The reaction mixture is purged with nitrogen for 5 minutes and then heated at 90° C. After 16 hours, the reaction is cooled to ambient temperature and diluted with ammonium chloride and extracted twice with EtOAc. The combined organic layers are dried over sodium sulfate, filtered, and concentrated under reduced pressure. The resulting residue is purified by flash chromatography (silica gel) using 0-100% ethyl acetate in hexane to afford the title compound as a brown solid (0.21 g, 36.2%). Mass spectrum (m/z): 453.2 (M+1). The reaction mixture is purged with nitrogen for 5 minutes the reaction is cooled to ambient temperature diluted with ammonium chloride extracted twice with EtOAc The combined organic layers are dried over sodium sulfate filtered concentrated under reduced pressure The resulting residue is purified by flash chromatography (silica gel)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 5-bromo-2-methyl-benzoic acid (1.35 g, 6.15 mmol) in THF (15 ml), CH2Cl2 (15 ml) and DMF (14.27 μl, 184.57 moles) is added dropwise oxalyl chloride (587.12 μl, 6.77 mmoles) at 0° C. and reaction mixture is slowly allowed to warm to ambient temperature. After 2 hours, the solvent is removed under reduced pressure. To the residue CH2Cl2 (30 ml) is added and reaction mixture is cooled to 0° C., then ethyl 4-amino-3,5-dimethyl-benzoate (1.19 g, 6.15 mmol) is added followed by 4-pyridinamine, N,N-dimethyl-(37.58 mg, 307.61 mmoles) and pyridine (1.49 ml, 18.46 mmoles). The cooling bath is removed and the clear solution is allowed to warm to ambient temperature. After 5 hours, the solvent is removed and the reaction mixture is diluted with ethyl acetate and washed with 1N HCl, saturated solution of sodium bicarbonate, and brine. The organic layers are combined and dried over anhydrous Na2SO4, filtered, and concentrated under reduced pressure. The resulting residue is triturated with hexanes and the resulting solids were collected by filtration to give the title compound as a white solid (1.80 g; 75.2%). Mass spectrum (m/z): 390.2 (M+1). reaction mixture the solvent is removed under reduced pressure To the residue CH2Cl2 (30 ml) is added reaction mixture is cooled to 0° C. The cooling bath is removed to warm to ambient temperature After 5 hours the solvent is removed the reaction mixture is diluted with ethyl acetate washed with 1N HCl, saturated solution of sodium bicarbonate, and brine dried over anhydrous Na2SO4 filtered concentrated under reduced pressure The resulting residue is triturated with hexanes the resulting solids were collected by filtration