A Flow Microreactor System Enables Organolithium Reactions without Protecting Alkoxycarbonyl Groups
作者:Aiichiro Nagaki、Heejin Kim、Yuya Moriwaki、Chika Matsuo、Jun-ichi Yoshida
DOI:10.1002/chem.201000876
日期:——
A flow microreactor system consisting of micromixers and microtube reactors provides an effective tool for the generation and reactions of aryllithiums bearing an alkoxycarbonyl group at para‐, meta‐, and ortho‐positions. Alkyl p‐ and m‐lithiobenzoates were generated by the I/Li exchange reaction with PhLi. The Br/Li exchange reactions with sBuLi were unsuccessful. Subsequent reactions of the resulting
由微混合器和微管反应器组成的流动微反应器系统为在对位,间位和邻位带有烷氧羰基的芳基锂的生成和反应提供了有效的工具。烷基p和-米通过与PhLi的I /锂交换反应生成-lithiobenzoates。与s BuLi的Br / Li交换反应不成功。所得芳基锂与亲电试剂的随后反应以良好收率得到所需产物。在另一方面,烷基ö -lithiobenzoates成功通过用溴/锂交换反应生成的小号卜力 随后与亲电试剂的反应以高收率得到所需产物。