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Synthesis of Chiral Ionic Polymers Containing Quaternary Ammonium Sulfonate Structure and their Catalytic Activity in Asymmetric Alkylation
Author(s) -
Parvez Md. Masud,
Salam Md. Abdus,
Haraguchi Naoki,
Itsuno Shinichi
Publication year - 2012
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201100724
Subject(s) - chemistry , alkylation , ammonium , sulfonate , catalysis , ionic bonding , dimer , polymer , enantioselective synthesis , protein quaternary structure , polymer chemistry , ionic liquid , organic chemistry , ion , sodium , biochemistry , protein subunit , gene
Repeated reaction between chiral quaternary ammonium dimer and disodium disulfonate gave the ionic polymer, which contains chiral quaternary ammonium sulfonate structure as a repeating unit. This chiral ionic polymer showed an excellent catalytic activity in asymmetric alkylation reaction. With the chiral ionic polymer catalysts, high level of enantioselectivities up to 97% ee were attained.