Chiral Bidentate Phosphoramidite-Pd Catalyzed Asymmetric Decarboxylative Dipolar Cycloaddition for Multistereogenic Tetrahydrofurans with Cyclic <i>N</i>-Sulfonyl Ketimine Moieties
作者:Hao-Peng Lv、Xiao-Peng Yang、Bai-Lin Wang、Hao-Di Yang、Xing-Wang Wang、Zheng Wang
DOI:10.1021/acs.orglett.1c01411
日期:2021.6.18
An asymmetric [3 + 2] cycloaddition of vinyl ethylenecarbonates (VECs) and (E)-3-arylvinyl substituted benzo[d] isothiazole 1,1-dioxides has been developed using the Pd complex of a bidentate phosphoramidite (Me-BIPAM) as the catalyst, providing a wide variety of chiral multistereogenic vinyltetrahydrofurans in good yields with excellent diastereo- and enantioselectivities (up to >20:1 dr, 99% ee)
使用二齿亚磷酰胺 (Me-BIPAM) 的 Pd 配合物开发了乙烯基碳酸亚乙酯 (VEC) 和 ( E )-3-芳基乙烯基取代的苯并[ d ] 异噻唑 1,1-二氧化物的不对称 [3 + 2] 环加成反应该催化剂以良好的收率提供多种手性多立体乙烯基四氢呋喃,并具有出色的非对映选择性和对映选择性(高达 >20:1 dr,99% ee)。