One-pot assembly of 4-methylene-3-oxa-1-azabicyclo[3.1.0]hexanes from alkyl aryl(hetaryl) ketoximes, acetylene, and aliphatic ketones: a new three-component reaction
作者:Boris A. Trofimov、Elena Yu. Schmidt、Al’bina I. Mikhaleva、Igor A. Ushakov、Nadezhda I. Protsuk、Elena Yu. Senotrusova、Olga N. Kazheva、Grigorii G. Aleksandrov、Oleg A. Dyachenko
DOI:10.1016/j.tetlet.2009.02.085
日期:2009.7
A new three-component reaction between alkyl aryl(hetaryl)ketoximes, acetylene, and aliphatic ketones in the superbasic systems KOH/DMSO and LiOH/CsF/DMSO (70–90 °C, initial acetylene pressure 13–15 atm, 5–60 min) affords novel 4-methylene-3-oxa-1-azabicyclo[3.1.0]hexanes in yields of up to 75%. Using KOH/DMSO, the side products of the reaction are O-vinylketoximes and 2-aryl(hetaryl)pyrroles, while
超基本体系KOH / DMSO和LiOH / CsF / DMSO中烷基芳基(杂芳基)酮肟,乙炔和脂肪族酮之间的新的三组分反应(70–90°C,初始乙炔压力为13–15 atm,5–60分钟)可得到新颖的4-亚甲基-3-氧杂-1-氮杂双环[3.1.0]己烷,产率最高可达75%。使用KOH / DMSO,反应的副产物是O-乙烯基酮肟和2-芳基(杂芳基)吡咯,而使用LiOH / CsF / DMSO,该反应被证明是选择性的,只有少量的相应烷基芳基(杂芳基)酮是可检测的。