Transition-Metal-Free Multicomponent Approach to Stereoenriched Cyclopentyl-isoxazoles through C−C Bond Cleavage
作者:Parthasarathi Subramanian、Krishna P. Kaliappan
DOI:10.1002/asia.201800608
日期:2018.8.16
efficient multicomponent reaction for the synthesis of stereoenriched cyclopentyl‐isoxazoles from camphor‐derived α‐oximes, alkynes, and MeOH is reported. Our method involved a series of cascade transformations, including the in situ generation of an IIII catalyst, which catalyzed the addition of MeOH to a sterically hindered ketone. Oxidation of the oxime, and rearrangement of the α‐hydroxyiminium