Cobalt-catalyzed cyclization with the introduction of cyano, acyl and aminoalkyl groups
作者:Hiroto Hori、Shigeru Arai、Atsushi Nishida
DOI:10.1039/c9ob00637k
日期:——
An efficient synthesis of carbo- and heterocycles using CC, CO and CN bonds undercobaltcatalysis is described. The substituents on olefins are key for controlling the regio- and chemoselectivity in the initial hydrogen atom transfer step and quaternary carbons are efficiently constructed under mild conditions. Cyclopropane cleavage and tandem cyclization give highly functionalized bicyclic skeletons
The merger of hydrogen atom transfer and Sulfinyl-Smiles rearrangement enables the asymmetric arylation of C(sp3)−H bonds in remote position to the double bond under photoredox conditions. Various chiral α-arylated amides are obtained with up to >99 : 1 er where the sulfinamido groups dictates the stereochemical outcome.