A tandemfour-componentreaction of 2-bromobenzaldehyde, alkyne, amine, and diethyl phosphite catalyzed by the combination of palladium and copper salts provides a facile and efficient route to 1,2-dihydroisoquinolin-1-ylphosphonate. A cascade Sonogashira-intramolecular cyclization-nucleophilic addition may be involved in the reaction process.
Synthesis of 1,2-dihydroisoquinolin-1-ylphosphonates via three-component reactions of 2-(2-formylphenyl)ethanone, amine, and diethyl phosphite
作者:Shengqing Ye、Haibo Zhou、Jie Wu
DOI:10.1016/j.tet.2008.12.038
日期:2009.2
Synthesis of 1,2-dihydroisoquinolin-1-ylphosphonates via CuI-catalyzed three-component tandem reactions of 2-(2-formylphenyl)ethanone, amine, and diethyl phosphite is described. The reactions proceed smoothly under mild conditions leading to the desired products in good yields.