文献类型：期刊文献

英文题名：Lewis Acid-Controlled Divergent Condensation of 1,1-Bis(Methylthio)-2-Nitroethylene and Salicylaldehydes for the Synthesis of 3-Nitrocoumarins and 4h-Chromenes

作者：Han, Li[1]; Quan, Xiaocao[1]; Shao, Xusheng[1]; Xu, Xiaoyong[1]; Li, Zhong[1,2]

机构：[1] Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China; [2] Shanghai Collaborative Innovation Center for Biomanufacturing Technology, 130 Meilong Road, Shanghai, 200237, China

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220276760)

语种：英文

外文关键词：Iron compounds

摘要：An efficient Lewis acid-controlled divergent synthesis of 3-nitrocoumarins and 4 H -chromenes under mild conditions has been developed. The corresponding 3-nitrocoumarin products were obtained in moderate to excellent yields through FeCl 3 -catalyzed annulation of 1,1-bis (methylthio)-2-nitroethylene with various salicylaldehydes, while 4-H chromeneproducts were afforded by using BF 3 ·OEt 2 as catalyst with the same start materials. ? 2022, The Authors. All rights reserved.