Stereoselective synthesis of allylic boronates via palladium-catalyzed cross-coupling reaction of Knochel's (dialkoxyboryl) methylzinc reagents with 1-halo-1-alkenes
作者:Takeo Watanabe、Norio Miyaura、Akira Suzuki
DOI:10.1016/0022-328x(93)83081-6
日期:1993.2
The cross-coupling reaction of (dialkoxyboryl)methylzinc reagents IZnCH2B(OR)2 with 1-halo-1-alkenes was catalysed by triphenyl-phosphine- or triphenylarsine-based palladium complexes to provide esters of stereodefined allylboronic acids with stereoselectivity. The reaction was applied to provide a cyclic alcohol via the first intramolecular allylboration of carbonyl.
三苯基膦或三苯基ar基钯配合物催化(二烷氧基硼基)甲基锌试剂IZnCH 2 B(OR)2与1-卤代-1-烯烃的交叉偶联反应,从而提供具有立体选择性的立体定义的烯丙基硼酸的酯。通过羰基的第一次分子内烯丙基硼化反应以提供环状醇。