Hydroxymethylpyridine Catalysts for the Enantioselective Alkynylation of Aldehydes
作者:Axel Jacobi von Wangelin、Sabrina Liebehentschel、Ján Cvengroš
DOI:10.1055/s-2007-986630
日期:2007.10
2-hydroxymethylpyridines based on fenchol and menthol were evaluated as catalysts for the enantioselective addition of terminal alkynes to aldehydes. With one of the fenchol-based ligands, the operationally simple protocol gave propargylic alcohols with excellent yields and up to 85% ee for various aldehyde and alkyne derivatives.
评估了基于苯酚和薄荷醇的手性 2-羟甲基吡啶作为末端炔烃与醛的对映选择性加成的催化剂。使用基于苯酚的配体之一,操作简单的方案提供了具有优异收率和高达 85% ee 的各种醛和炔衍生物的炔丙醇。