Double metal-catalyzed cross-coupling reactions of alkenyl sulfoximines with diorganozinc reagents: Synthesis of optically active axial chiral allylic silanes
作者:Hans-Joachim Gais、Gred Bülow
DOI:10.1016/s0040-4039(00)93968-6
日期:1992.1
Nickel- and magnesium-catalyzed cross-coupling reaction of the alkenyl sulfoximine 5 with the pure diorganozinc reagents 6a and 6b gave the optically active allylic silanes 7a and 7b, respectively, Single metal catalysis was sufficient for the substitution of the bromide rac-9 whereas the sulfone rac-10 did neither under the conditions of single nor under that of double metal catalysis react with 6a
链烯基
硫肟基
亚胺5与纯二
有机锌试剂6a和6b的
镍和
镁催化的交叉偶联反应分别得到光学活性的烯丙基
硅烷7a和7b,单
金属催化足以取代
溴化物rac- 9,而砜rac- 10在单
金属催化和双
金属催化条件下均未与6a反应。