title: An efficient biomaterial supported bifunctional organocatalyst (ES-SO3- C5H5NH+) for the synthesis of β-amino carbonyls.
abstract: 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.
authors.affiliation: Chemical Sciences Division, Indian Institute of Petroleum, Mohkampur, Dehradun-248005, India.
authors.forename: Sanny
authors.initials: S
authors.lastname: Verma
authors.forename: Suman L
authors.initials: SL
authors.lastname: Jain
authors.forename: Bir
authors.initials: B
authors.lastname: Sain
mesh_terms: D000476:Alkanesulfonates / Q000737:chemistry*; D000588:Amines / Q000138:chemical synthesis*; D001372:Aza Compounds / Q000737:chemistry; D002384:Catalysis; D015394:Molecular Structure
chemical_list: D000476:Alkanesulfonates; D000588:Amines; D001372:Aza Compounds