反应详情

To a mixture of 0.144 g (0.0005 mole) of 9-benzyl-2-chloro-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one (VI-22), 1 mL of N,N-dimethylacetamide and 0.047 mL (0.00075 mole) of iodomethane at 0 degrees was added 0.03 g (0.00075 mole) of 60% sodium hydride in oil. The mixture was stirred at ambient temperature for 1 hour, then 20 mL of water was added. The precipitate was collected by filtration to give 0.134 g of 9-benzyl-2-chloro-5-methyl-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one (VII-22) as an yellow solid.

1. filtrationThe precipitate was collected by filtration