An efficient biomaterial supported bifunctional organocatalyst (ES-SO3− C5H5NH+) for the synthesis of β-amino carbonyls
作者:Sanny Verma、Suman L. Jain、Bir Sain
DOI:10.1039/c0ob00965b
日期:——
A biomaterial supported organocatalyst, readily synthesized by the reaction of chemically modified sulfonic group containing expanded corn starch with pyridine exhibited excellent catalytic activity for the synthesis of β-amino carbonyls in excellent yields via aza-Michael addition of amines to electron deficient alkenes. A remarkable enhancement in the reaction rates was observed with the prepared bifunctional organocatalyst in comparison to the either starch grafted sulfonic acid or the corresponding homogeneous pyridinium p-toluenesulfonate.