Cross-Coupling of N-Allylic Sulfonimides with Organozinc Reagents at Room Temperature
作者:Xiang-Ling Tang、Zhao Wu、Man-Bo Li、Yonghong Gu、Shi-Kai Tian
DOI:10.1002/ejoc.201200594
日期:2012.8
An efficient cross-coupling reaction of N-allylic sulfonimides with organozinc reagents has been developed. In the presence of 1 mol-% of Pd 2 (dba) 3 , a range of N-allylic sulfonimides smoothly couple with various organozinc reagents at room temperature to give the corresponding (E)-alkene products in moderate to excellent yields and with good to exclusive α-selectivity. It is noteworthy that allyl
已开发出 N-烯丙基磺酰亚胺与有机锌试剂的有效交叉偶联反应。在 1 mol% 的 Pd 2 (dba) 3 存在下,一系列 N-烯丙基磺酰亚胺在室温下与各种有机锌试剂平滑偶联,以中等至极好的收率和良好的产率得到相应的 (E)-烯烃产物具有排他性 α 选择性。值得注意的是,烯丙基醚、苄基醚和酯在反应条件下是可以耐受的。