Reactions of Monoaryl-Substituted Methylenecyclobutanes and Methylenecyclopropanes with 1-Hydroxybenzotriazole (HOBt), 1-Hydroxy-7-azabenzotriazole (HOAt), and 1-Hydroxysuccinimide (HOSu)
作者:Min Jiang、Min Shi
DOI:10.1021/jo9000299
日期:2009.3.20
Monoaryl-substituted methylenecyclobutanes (MCBs) and methylenecyclopropanes (MCPs) react with 1-hydroxybenzotriazole (HOBt), 1-hydroxy-7-azabenzotriazole (HOAt), and 1-hydroxysuccinimide (HOSu) smoothly to produce the corresponding cyclobutylmethanone and cyclopropylmethanone derivatives 2, 4, and 5 via a cascade epoxidation and nucleophilic addition process or the corresponding epoxides 6 in moderate
单芳基取代的亚甲基环丁烷(MCB)和亚甲基环丙烷(MCP)与1-羟基苯并三唑(HOBt),1-羟基-7-氮杂苯并三唑(HOAt)和1-羟基琥珀酰亚胺(HOSu)平稳反应,生成相应的环丁基甲酮和环丙基甲酮衍生物2,通过级联环氧化和亲核加成过程或相应的环氧化物6在温和的条件下以中等至良好的收率得到图4和5所示的产物。在控制实验和反应中间体的分离的基础上,提出了一种合理的机理。