dihalogenation of alkyne-tethered cyclohexadienones for the synthesis of cis-hydrobenzofurans. One carbon–carbon and two carbon–halogen bonds were formed in an efficient manner and three contiguous stereocenters were generated. The reaction proceeds through cis-halopalladation, migratory insertion followed by a nucleophilic attack of a halide anion on a palladium enolate.
在本文中,我们报道了用于连接顺式-氢
苯并呋喃的
炔烃系环己二酮的高度非对映异构和区域选择性二卤代反应。有效地形成了一个碳-碳键和两个碳-卤素键,并生成了三个连续的立体中心。该反应通过顺-卤化
钯,迁移插入,然后卤化阴离子对烯醇
钯的亲核攻击而进行。