反应详情

The title compound was prepared by a similar method to that of 1-tert-butyl 4-ethyl 5-oxoazepane-1,4-dicarboxylate (see WO2006029154, example 1a, p 34) from Tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate, yielding 100% of title compound which was taken on for pyrimidone formation without further purification.