Controllable Intramolecular Unactivated C(sp3)-H Amination and Oxygenation of Carbamates

Org Lett. 2019 Feb 15;21(4):880-884. doi: 10.1021/acs.orglett.8b03299. Epub 2019 Jan 29.

Abstract

Dual catalyst-controlled intramolecular unactivated C(sp3)-H amination and oxygenation of carbamates merging visible-light photocatalysis and earth-abundant transition metal catalysis have been reported. Useful amino alcohol and diol derivatives could be selectively obtained from readily available tertiary alcohol derivatives. The possible mechanisms have been proposed via a 1,5-HAT process followed by Lewis acid-controlled cyclization. The nickel and zinc catalysts inhibit the formation of oxygenation and amination products, respectively. An interesting phenomenon of chirality transfer is also observed.

Publication types

  • Research Support, Non-U.S. Gov't