作者:Shoko Yamazaki、Kuriko Yamada、Shinichi Yamabe、Kagetoshi Yamamoto
DOI:10.1021/jo016159r
日期:2002.5.1
Reactions of enynes with three or two ester groups (1-4) in the presence of halogen-ligand Lewis acids gave cyclized products with halide incorporation (5-8) with high generality. The cyclization process was also analyzed in a theoretical study. Facile isomerization and dehydrohalogenation of five-membered products 5 and 8 by Al(2)O(3) or Et(3)N were also observed; this process introduces conjugated
在卤素-配体路易斯酸存在下,烯炔与三个或两个酯基(1-4)的反应得到的环化产物具有很高的通用性,其中引入了卤化物(5-8)。在理论研究中还分析了环化过程。还观察到五元产物5和8通过Al(2)O(3)或Et(3)N的容易异构化和脱氢卤化作用;该过程将共轭部分引入产物中。