Enantioselective Acyloin Rearrangement of Acyclic Aldehydes Catalyzed by Chiral Oxazaborolidinium Ion
作者:Soo Min Cho、Si Yeon Lee、Do Hyun Ryu
DOI:10.1021/acs.orglett.1c00314
日期:2021.2.19
A catalytic enantioselective acyloin rearrangement of acyclic aldehydes to synthesize highly optically active acyloin derivatives is described. In the presence of a chiral oxazaborolidinium ion catalyst, the reaction provided chiral α-hydroxy aryl ketones in high yield (up to 95%) and enantioselectivity (up to 98% ee). In addition, the enantioselective acyloin rearrangement of α,α-dialkyl-α-siloxy
描述了无环醛的催化对映体选择性酰基转移酶重排以合成高度旋光的酰基转移酶衍生物。在手性恶唑硼烷鎓离子催化剂的存在下,该反应以高产率(高达95%)和对映选择性(高达98%ee)提供了手性α-羟基芳基酮。另外,α,α-二烷基-α-甲硅烷氧基醛的对映选择性酰基肌醇重排以高产率(高达92%)和良好的对映选择性(高达89%ee)产生手性α-甲硅烷氧基烷基酮。