Dichloromethane → HCID 86652152, compound

Participants

Reaction Steps

1-Chloroethyl chloroformate (0.12 ml, 1.2 mmol) was added dropwise to a dichloromethane (10 ml) solution of 7-chloro-1-[2-methyl-4-(2-methylbenzamido)benzoyl]-2,3,4,5-tetrahydro-1H-benzo[b]azepin-5-yl methylaminoacetate (0.60 g, 1.2 mmol), and the mixture was cooled with ice. Then N-methylmorpholine (0.15 ml, 1.4 mmol) was gradually added dropwise thereto. After the resultant mixture was stirred at room temperature for 1 hour, the reaction mixture was diluted with ethyl acetate, washed with water and an aqueous saturated sodium chloride solution, dried over sodium sulfate. After filtration and concentration, the residue was purified by silica gel chromatography (n-hexane:ethyl acetate) to obtain 0.67 g (93%) of 7-chloro-1-[2-methyl-4-(2-methylbenzamido)-benzoyl]-2,3,4,5-tetrahydro-1H-benzo[b]azepin-5-yl [(1-chloroethoxycarbonyl)methylamino]acetate as amorphous.

Provenance & Evidence