Iridium-catalyzed asymmetric allylation of sodium triisopropylsilanethiolate: A new way to form chiral thiols
作者:Weiqing Huang、Shengcai Zheng、Jialiang Tang、Xiaoming Zhao
DOI:10.1039/c1ob06332d
日期:——
The iridium phosphoramidite complex-promoted regio- and enantioselective reaction of allylic carbonates with sodium triisopropylsilanethiolate produced allylic sulfides in 40–77% yields with up to 97 : 3 (branched : linear) and 89% ee, which were readily transformed into chiral thiol in 68% yield with 87% ee or disulfides with two chiral C–S bond centers in 40–73% yields with up to 90 : 10 dr and 99% ee.
铱磷酰胺络合物促进烯丙基碳酸酯与三异丙基硫代硅酸钠发生区域和对映体选择性反应,生成烯丙基硫化物,收率为 40-77%,ee值高达 97 :这些硫化物很容易转化成手性硫醇,收率为 68%,ee 为 87%,或者转化成具有两个手性 C-S 键中心的二硫化物,收率为 40-73% ,ee 为 90 :10 dr,ee 为 99%。