Enantioselective Mukaiyama–Michael with 2-enoyl pyridine N-oxides catalyzed by PYBOX-DIPH-Zn(ii)-complexes at ambient temperature
作者:Subhrajit Rout、Sumit K. Ray、Vinod K. Singh
DOI:10.1039/c3ob40445e
日期:——
A chiral PYBOX-DIPH-Zn(II) catalyzedenantioselectiveMukaiyama–Michaelreaction of acyclic silylenolethers with 2-enoylpyridine N-oxides has been studied in external additive free conditions at ambient temperature. The methodology offers straightforward access to a variety of functionalized chiral 1,5-dicarbonyl compounds, which could easily be elaborated into synthetically viable pyrones via hydrolysis