Citation: REN Changyu, CHEN Chuanfu, XI Fu. HELIX SENSE-SELECTIVE COPOLYMERIZATION OF TRIPHENYLMETHYL METHACRYLATE WITH CHIRAL ANIONIC INITIATORS*[J]. Chinese Journal of Polymer Science, ;1994, 12(4): 379-384. shu

HELIX SENSE-SELECTIVE COPOLYMERIZATION OF TRIPHENYLMETHYL METHACRYLATE WITH CHIRAL ANIONIC INITIATORS*

Received Date: 4 December 1993

Optically active copolymers of pairs of three monomers, triphenyl (methyl methacrylate)and one or two pyridyl substituted methyl methacrylate homologues, were obtained by helix-sense-selective copolymerization using complexes of organolithium with chiral ligand as anionicinitiators in toluene at low temperature. The copolymers obtained with (-)-sparteine (Sp) and(S,S)-(+)-and (R, R)-(-)-2, 3-dimethoxy-1, 4-bis (dimethylamino) butanes((+)-and (-)-DDB) complexes of organolithium showed low optical activity, but PMP complex with N,N-diphenylethyleneamine monolithium amide (PMP-DPEDA-Li) was effective in synthesizing copolymers of high optical rotation ([α]D25 about+320～370°)which were comparable to those of relative homopolymers with one-handed helical astructure.
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