Metal-Free C(sp2)-H/N-H Cross-Dehydrogenative Coupling of Quinoxalinones with Aliphatic Amines under Visible-Light Photoredox Catalysis.
Organic letters
Format:
Journal Article
Publication Date:
Nov 30, 2017
Pages:
7125 - 7130
Sources ID:
104751
Collection:
Himalayan and Tibetan Medicine
Visibility:
Public (group default)
Abstract:
(Show)
A novel and efficient visible-light-induced C(sp2)-H/N-H cross-dehydrogenative coupling (CDC)-amination with both primary and secondary aliphatic amines at room temperature in air is developed. This photocatalytic reaction allows the direct formation of 3-aminoquinoxalin-2(1 H)-ones via CDC-amination in the absence of any external oxidant added from outside. Preliminary mechanistic studies reveal that the present reaction proceeds through a radical process.