developed for the synthesis of indoline and indole derivatives. The Mo/quinone complex efficiently deoxygenates carbonyl compounds bearing a neighboring dialkylamino group and effects intramolecular cyclizations with the insertion of a deoxygenated carbonyl carbon into a C(sp3)-H bond, in which a carbonylgroup acts as a carbene equivalent. The reaction also proceeds with a catalytic amount of Mo/quinone
Brønsted acid cocatalysis in photocatalytic intramolecular coupling of tertiary amines: efficient synthesis of 2-arylindols
作者:Xiaoqian Yuan、Xinxin Wu、Shupeng Dong、Guibing Wu、Jinxing Ye
DOI:10.1039/c6ob01239f
日期:——
We report herein a highly efficient intramolecular coupling reaction of tertiaryamines and ketones (α,β-unsaturated ketones) by using a Brønsted acid as a cocatalyst, affording 2-arylindols in good to excellent yields (up to 92%) under visible light irradiation at room temperature.