| HELIX SENSE-SELECTIVE COPOLYMERIZATION OF TRIPHENYLMETHYL METHACRYLATE WITH CHIRAL ANIONIC INITIATORS |
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| 作者姓名： | 任长玉 陈传福 习复 |
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| 作者单位： | Institute of Chemistry，Academia Sinca，Beijing 100080，Institute of Chemistry，Academia Sinca，Beijing 100080，Institute of Chemistry，Academia Sinca，Beijing 100080 |
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| 基金项目： | This project is supported by the National Natural Science Foundation of China and the President Foundation of Academia Sinica |
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| 摘 要： | 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 synthesizingcopolymers of high optical rotation (α]_D~(25) about+320～1370°)which were comparable to thoseof relative homopolymers with one-handed helical structure.
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| 收稿时间： | 1993-12-04 |
HELIX SENSE-SELECTIVE COPOLYMERIZATION OF TRIPHENYLMETHYL METHACRYLATE WITH CHIRAL ANIONIC INITIATORS* |
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| REN Changyu,CHEN Chuanfu,XI Fu.HELIX SENSE-SELECTIVE COPOLYMERIZATION OF TRIPHENYLMETHYL METHACRYLATE WITH CHIRAL ANIONIC INITIATORS[J].Chinese Journal of Polymer Science,1994,0(4):379-384. |
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| Authors: | REN Changyu CHEN Chuanfu XI Fu |
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| Institution: | Institute of Chemistry; Academia Sinca; Beijing |
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| Abstract: | 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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| Keywords: | Phenyl [bis (2-pyridyl) methyl methacrylate (s)-(+)-1-(2pyrrolidinyl-methyl) pyrrolidine (PMP) Anionic asymmetric copolymerization Optically active copolymer |
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