Title of article :
Trimeric Cinchona alkaloid phase-transfer catalyst: α,α′,α′′-tris[O(9)-allylcinchonidinium]mesitylene tribromide
Author/Authors :
Park، نويسنده , , Hyeung-geun and Jeong، نويسنده , , Byeong-seon and Yoo، نويسنده , , Mi-sook and Park، نويسنده , , Mi-kyoung and Huh، نويسنده , , Hoon and Jew، نويسنده , , Sang-sup، نويسنده ,
Abstract :
A trimeric Cinchona alkaloid ammonium salt, α,α′,α′′-tris[O(9)-allylcinchonidinium]mesitylene tribromide has been prepared as a novel phase-transfer catalyst. The catalytic enantioselective alkylation of N-(diphenylmethylene)glycine tert-butyl ester using the trimer catalyst showed high enantioselectivity (90–97% ee).
