反应详情

Into an apparatus similar to that in Example 1, were charged 284.1 g (1 mole) of N-hexadecylethylenediamine and 130.1 g (1 mole) of ethyl acetoacetate. At 160° to 170° C., 18 g of water and 46 g of ethanol were distilled off to obtain 4-hexadecyl-7-methyl-3,6-dihydro-2H-1,4-diazepin-5-one.

1. distillationAt 160° to 170° C., 18 g of water and 46 g of ethanol were distilled off