反应详情

The title compound was prepared from 1-tert-butyl 4-ethyl 4-(2-cyclopropylallyl)piperidine-1,4-dicarboxylate in four steps in an analogous fashion as described for 3-ethyl-2-(5-oxo-2,5-dihydrofuran-3-yl)-2,8-diazaspiro[4.5]decan-1-one (I-43).