Enantioselective alkynylation of carbonyl compounds with trimethoxysilylalkynes catalyzed by lithium binaphtholate
作者:Tomohiro Ueda、Kana Tanaka、Tomonori Ichibakase、Yuya Orito、Makoto Nakajima
DOI:10.1016/j.tet.2010.07.080
日期:2010.9
Enantioselective alkynylation of aldehydes and ketones was accomplished using trimethoxysilylalkynes as alkynylating reagents and lithium 3,3′-diphenylbinaphtholate as a catalyst. Optically active propargylic alcohols were obtained in good to high chemical yields and enantioselectivities. Alkynylation of acetylpyridines afforded biologically active pyridyl propargylic alcohols in good enantioselectivities
使用三甲氧基甲硅烷基炔烃作为炔基化试剂和3,3'-二苯基联萘甲酸锂实现对醛和酮的对映选择性炔基化。以良好至高的化学产率和对映选择性获得了光学活性的炔丙醇。乙酰吡啶的炔基化得到具有良好对映选择性的生物活性吡啶基炔丙基醇。