Three-Component Reactions of 3-Arylidene-3 H-Indolium Salts, Isocyanides and Amines

Molecules. 2021 Apr 21;26(9):2402. doi: 10.3390/molecules26092402.

Abstract

A multicomponent reaction of isocyanides with aryl(indol-3-yl)methylium salts and amines has been found. A series of aryl(indol-3-yl)acetimidamides was obtained in up to 96% yields. In the case of ethyl isocyanoacetate, the reaction is followed by cyclization to form 3,5-dihydro-4H-imidazol-4-one derivatives.

Keywords: carbenium ions; imidamides; imidazolones; indoles; isocyanides; multicomponent reactions.