activation and cyclization of sulfoxonium ylide with acrylates leads to an efficient synthesis of indanone derivatives. The reaction proceeds under mild and external metal-oxidant-free conditions. The sulfoxonium ylide acts as a tracelessdirectinggroup as well as an internal oxidant. (4 + 1) Annulation after C–H activation leads to the formation of a carbocyclic ring, and the byproduct obtained is DMSO
Controllable Skeleton Rearrangement of
<scp>3‐Substituted</scp>
Cyclobutanones under Basic Conditions
<sup>†</sup>
作者:Peng Yan、Qiang Zhou、Jun Chen、Ping Lu
DOI:10.1002/cjoc.201900510
日期:2020.10
Divergent skeleton rearrangements of cyclobutanones under simply basic conditions have been described. The reaction pathway is controlled by the nature of Z group on 3‐substitutedcyclobutanones, leading to the formation of various lactones, lactams and acids. Preliminary results on enantioselective reaction were also reported.