反应详情

Into an apparatus similar to that in Example 1, were charged 315.1 g (1 mole) of N-dodecoxyethyldiethylenetriamine and 130.1 g (1 mole) of ethyl acetoacetate at 150° to 160° C., 18 g of water and 46 g of ethanol were distilled off to obtain 4-dodecoxyethylaminoethyl-7-methyl-3,6-dihydro-2H-1,4-diazepin-5-one.

1. distillation18 g of water and 46 g of ethanol were distilled off