Application of Phenolate Ion Mediated Intramolecular Epoxide Ring Opening in the Enantioselective Synthesis of Functionalized 2,3-Dihydrobenzofurans and 1-Benzopyrans¹
作者:Gautam Panda、Subal Dinda、Sajal Das
DOI:10.1055/s-0028-1088077
日期:2009.6
The enantioselective synthesis of 2-isopropenyl-2,3-dihydrobenzofurans, 4-(2,3-dihydrobenzofuran-2-yl)-2-methylbut-3-en-2-ols, 2-hydroxymethyl chromans, and 4-chroman-2-yl-2-methylbut-3-en-2-ols has been achieved using Sharpless asymmetric epoxidation-derived enantiomerically enriched epoxy alcohols as chiral building blocks. A phenolate ion mediated intramolecular epoxide ring-opening reaction was
对映选择性合成2-异丙烯基-2,3-二氢苯并呋喃,4-(2,3-二氢苯并呋喃-2-基)-2-甲基丁-3-烯-2-醇,2-羟甲基苯并二氢吡喃和4-苯并二氢吡喃-使用Sharpless不对称环氧化衍生的对映异构体富集的环氧醇作为手性结构单元,可以实现2-yl-2-甲基but-3-en-2-ols。酚盐离子介导的分子内环氧化物开环反应是每个环化反应的关键步骤。 2-异丙烯基-2,3-二氢苯并呋喃-2-羟甲基苯并二氢吡喃-环氧化-环氧化物-多环化合物-开环 CDRI通信号码7184。