Synthesis of main-chain chiral quaternary ammonium polymers for asymmetric catalysis using quaternization polymerization.
Main-chain chiral quaternary ammonium polymers were successfully synthesized by the quaternization polymerization of cinchonidine dimer with dihalides. The polymerization occurred smoothly under optimized conditions to give novel type of main-chain chiral quaternary ammonium polymers. The catalytic activity of the polymeric chiral organocatalysts was investigated on the asymmetric benzylation of N-(diphenylmethylidene)glycine tert-butyl ester.
Department of Environmental and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Toyohashi, Aichi 441-8580, Japan. haraguchi@ens.tut.ac.jp
Naoki
N
Haraguchi
Parbhej
P
Ahamed
Md Masud
MM
Parvez
Shinichi
S
Itsuno
D002384:Catalysis; D002930:Cinchona Alkaloids / Q000138:chemical synthesis; D058105:Polymerization; D011108:Polymers / Q000138:chemical synthesis*; D000644:Quaternary Ammonium Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D013237:Stereoisomerism; D013438:Sulfhydryl Compounds / Q000138:chemical synthesis
D002930:Cinchona Alkaloids; D011108:Polymers; D000644:Quaternary Ammonium Compounds; D013438:Sulfhydryl Compounds; C041622:cinchonidine