Mild Isomerization of Conjugated Dienes Using Co-Mediated Hydrogen Atom Transfer
作者:Kyle R. Delgado、Dustin D. Youmans、Steven T. Diver
DOI:10.1021/acs.orglett.9b04594
日期:2020.1.17
A mild and high yielding rearrangement of 1,3-disubstituted-1,3-dienes to 1,1,4-trisubstituted-1,3-dienes using a cobaloxime catalyst and a silane cocatalyst is reported. Chiral centers near the conjugated diene were not racemized. Deuterium labeling studies are consistent with a hydrogen atom transfer mechanism, and radical intermediates were found to be accessible due to the observed ring opening