An efficient organocatalyzed multicomponent synthesis of diarylmethanes via Mannich type Friedel–Crafts reaction
作者:Atul Kumar、Mukesh Kumar、Maneesh Kumar Gupta
DOI:10.1016/j.tetlet.2009.09.155
日期:2009.12
multicomponent synthesis of diarylmethane derivatives from tertiary aromatic amines, formaldehyde and 2-naphthols via Mannich type Friedel–Crafts reaction. Several organocatalysts such as (−)-chinchonidine, l-proline, l-thiaproline, and l-pipecolonic acid have been screened for the reaction but the best results were obtained with l-proline. In this Mannich type Friedel–Crafts alkylation, tertiary aromatic amines