Synthesis of Optically Active Bifunctional Building Blocks through Enantioselective Copper-Catalyzed Allylic Alkylation Using Grignard Reagents
作者:Anthoni W. van Zijl、Fernando López、Adriaan J. Minnaard、Ben L. Feringa
DOI:10.1021/jo0625655
日期:2007.3.1
Enantioselective copper-catalyzed allylic alkylations were performed on allylic bromides with a protected hydroxyl or amine functional group using several Grignard reagents and Taniaphos L1 as a ligand. The terminal olefin moiety in the products was transformed into various functional groups without racemization, providing facile access to a variety of versatile bifunctional chiral building blocks.
使用几种格氏试剂和Taniaphos L1作为配体,对具有保护的羟基或胺官能团的烯丙基溴进行对映选择性铜催化的烯丙基烷基化反应。产物中的末端烯烃部分无需外消旋就可转化为各种官能团,可轻松获得各种通用的双官能手性结构单元。