Palladium(II)‐Catalyzed Intermolecular Cascade Cyclization of Methylenecyclopropanes with Aromatic Alkynes: Construction of Spirocyclic Compounds Containing Indene and 1,2‐Dihydronaphthalene Moieties
作者:Wei Fang、Yin Wei、Min Shi
DOI:10.1002/adsc.201900327
日期:2019.7.11
A palladium(II)‐catalyzed intermolecular cascade cyclization of methylenecyclopropanes with aromatic alkynes is reported in this paper. The reaction involves a migratory insertion of alkyne, an intramolecular Heck‐type reaction, and β‐H elimination, providing a series of spirocyclic compounds containing indene and 1,2‐dihydronaphthalene moieties in moderate to excellent yields upon heating.
本文报道了钯(II)催化的亚甲基环丙烷与芳族炔烃的分子间级联环化。该反应涉及炔烃的迁移插入,分子内Heck型反应和β-H消除,从而提供一系列含有茚和1,2-二氢萘部分的螺环化合物,加热后产率中等至极好。