Pyridine → N-[2,3-dihydro-5-(2,6-dimethoxy-4-methylphenyl)-1-methyl-2-oxo-1H-1,4-benzodiazepin-3-yl]-1H-2-indolecarboxamide

Participants

Reaction Conditions

Reaction Steps

0.47 ml of pyridine is dissolved in 10 ml of dichloromethane, cooled to -5° C., and 0.68 ml of thionyl chloride is added dropwise, the mixture is stirred for 20 minutes at the same temperature and then 208 mg of indole-2-carboxylic acid are added portionwise with stirring for 30 minutes. 400 mg of 3-amino-1,3-dihydro-5-(2,6-dimethoxy-4-methylphenyl)-1-methyl-1,4-benzodiazepin-2-one are added portionwise and the reaction mixture is then allowed to return to room temperature and is stirred for 16 hours. Water is added to the reaction mixture and the precipitate formed is filtered off and dried to give white crystals of N-[2,3-dihydro-5-(2,6-dimethoxy-4-methylphenyl)-1-methyl-2-oxo-1H-1,4-benzodiazepin-3-yl]-1H-2-indolecarboxamide melting with decomposition at 310° C.; Yield=79%.

Provenance & Evidence