Ring chain transformation of γ-keto-δ-crotonolactones: A convenient synthesis of 1,4-piperazinones, 1,4-thiazinones and 1,4-diazepinones
作者:Costas D. Apostolopoulos、Minas P. Georgiadis、Elias A. Couladouros
DOI:10.1002/jhet.5570330330
日期:1996.5
A new procedure for the efficient synthesis of 1,4-piperazinones, 1,4-thiazinones and 1,4-diazepinones is presented. The reaction is based on a ring chain transformation of γ-keto-δ-crotonolactones induced by 1,2- or 1,3-diamino- (or thiamino-) binucleophiles. The reaction sequence of this transformation is also discussed.
提出了一种有效合成1,4-哌嗪酮,1,4-噻嗪酮和1,4-二氮杂庚酮的新方法。该反应基于由1,2-或1,3-二氨基-(或硫氨基-)双亲核试剂诱导的γ-酮-δ-巴豆内酯的环链转化。还讨论了这种转化的反应顺序。