Synthesis of Novel Spiro Compounds using Anthrone and Pyrazole-5-thione Moieties: A Michael Addition approach
作者:Madhukar S. Chande、Rahul R. Khanwelkar、Pravin A. Barve
DOI:10.3184/030823407x237821
日期:2007.8
Novel routes for the synthesis of spiro derivatives anthrone have been designed using a Michael addition reaction followed by a Dieckmann condensation and Thorpe–Ziegler cyclisation. Bis-Michael addition of pyrazole-5-thione with 1,5-diarylpenta-1,4-dien-3-one gave directly a spiro derivative of pyrazole-5-thione. An enol lactone was synthesised by using mono Michael addition on dimedone, followed
使用迈克尔加成反应,然后是迪克曼缩合和索普-齐格勒环化,设计了合成螺环衍生物蒽酮的新路线。吡唑-5-硫酮与 1,5-二芳基五-1,4-二烯-3-酮的双-迈克尔加成直接得到吡唑-5-硫酮的螺衍生物。通过在二甲酮上使用单迈克尔加成,然后水解和缩合来合成烯醇内酯。