高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (7): 1152.

• 研究快报 • 上一篇    下一篇

主链光学活性ω-十一烯酸-一氧化碳共聚物的合成与表征

袁建超1, 张玉华1, 陈敏东1, 吕士杰2   

  1. 1. 中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室, 兰州 730000;
    2. 兰州军区总医院药物分析室, 兰州 730000
  • 收稿日期:2001-02-05 出版日期:2001-07-24 发布日期:2001-07-24
  • 通讯作者: 吕士杰(1939年出生),男,博士,博士生导师,主要从事金属有机、配位化学及不对称催化研究.
  • 基金资助:

    国家自然科学基金(批准号:29933050

Synthesis and Characterization of Main Chain Optically Active Copolymer of ω-Undecylenic Acid with Carbon Monooxide

YUAN Jian-Chao1, ZHANG Yu-Hua1, CHEN Min-Dong1, LÜ Shi-Jie2   

  1. 1. State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. Department of Drug Analysis, General Hospitalof Lanzhou Military Command, Lanzhou 730000, China
  • Received:2001-02-05 Online:2001-07-24 Published:2001-07-24

关键词: 阳离子钯催化剂, 手性配体, 对映体选择性交替共聚, 全同共聚物, 光学活性

Abstract: Enantioselective alternating copolymerization of carbon monoxide with ω undecylenic acid was carried out using cationic palladium catalyst modified by 1,4-3,6-dianhydro-2,5-dideoxy-2,5-bis(diphenylphosphino)-L-iditol (DDPPI). The chiral diphosphine was proved to be effective in the enantioselective copolymerization. The pure poly(1,4-ketone) was obtained by dissolving the copolymer containing spiroket al and 1,4-ketone units in1,1,1,3,3,3-hexafluoro-2-propanol and reprecipitating with methanol. Optical rotation, elemental analysis, spectra of 1H NMR, 13C NMRand IRshowed that our copolymer was an optically active, isotatic, alternating poly(1,4-ketone) structure. The copolymerization was carried out at 45 ℃ for 20 h. Molecular weight: Mn=1.1× 104 versus polystyrene,Mw/Mn=1.84. Molar optical rotation: [α]58920 =+43°(CH3COOC2H5, 5.0 mg/mL). The productivity of the copolymer of ω-undecylenic acid with carbon monoxide was 40.6 g copolymer/(g Pd·h).

Key words: Cationic palladium catalyst, Chiral ligand, Enantioselective alternating copolymerization, Isotactic copolymer, Optical activity

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