Application of Dehydroabietic Acid in Palladium-Catalysed Enyne Cycloisomerisation
作者:Na Wu、Ruikun Li、Feihu Cui、Yingming Pan
DOI:10.1002/adsc.201700061
日期:2017.7.17
Dehydroabietic acid (DAA) promotes palladium(0)‐catalysed cyclisations of arene‐tethered 1,7‐enynols and 1,m‐enynoates (m=6,7) to give fused carbocyclic dienes. 6,6,6,5‐Tetracyclic lactones are accessible by one‐pot cycloisomerisation/Diels–Alder reaction/lactonisation from 1,7‐enynols. Furthermore, asymmetric counteranion‐directed catalysis has been developed, which afforded an indene derivative with
脱氢松香酸(DAA)促进钯(0)催化的芳烃系的1,7-烯醇和1,m-烯醇酸酯(m = 6,7)的环化反应,生成稠合的碳环二烯。通过1,7-烯醇的一锅环异构化/ Diels-Alder反应/内酯化可得到6,6,6,5-四环内酯。此外,还开发了不对称抗衡阴离子导向的催化方法,该催化方法提供了具有全碳四元立体构型中心的茚衍生物。