SYNTHESIS AND CHARACTERIZATION OF MAIN CHAIN OPTICALLY ACTIVE COPOLYMER OF 1-HEPTENE WITH CARBON MONOXIDE

YUAN Jianchao; L Shijie; WANG Dongmei

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SYNTHESIS AND CHARACTERIZATION OF MAIN CHAIN OPTICALLY ACTIVE COPOLYMER OF 1-HEPTENE WITH CARBON MONOXIDE

Research Bulletin | 更新时间：2021-03-19

- SYNTHESIS AND CHARACTERIZATION OF MAIN CHAIN OPTICALLY ACTIVE COPOLYMER OF 1-HEPTENE WITH CARBON MONOXIDE
- Acta Polymerica Sinica Issue 3, Pages: 399-402(2001)
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- Published：20 June 2001，
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YUAN Jianchao, L Shijie, WANG Dongmei. SYNTHESIS AND CHARACTERIZATION OF MAIN CHAIN OPTICALLY ACTIVE COPOLYMER OF 1-HEPTENE WITH CARBON MONOXIDE. [J]. Acta Polymerica Sinica (3):399-402(2001)
DOI：

YUAN Jianchao, L Shijie, WANG Dongmei. SYNTHESIS AND CHARACTERIZATION OF MAIN CHAIN OPTICALLY ACTIVE COPOLYMER OF 1-HEPTENE WITH CARBON MONOXIDE. [J]. Acta Polymerica Sinica (3):399-402(2001) DOI：

摘要

Abstract

Enantioselective alternating copolymerization of carbon monoxide with 1-heptene was carried out using palladium catalyst modified hy 1

4-3

6-dianhydro-2

5一dideoxy-2

5-bis(diphenylphosphino)-L-iditol (DDPPI)．The chiral diphosphine was proved to be effective at enantioselective copolymerization．The pure poly(1

4-ketone) was obtained by dissolving the copolymer containing spiroketal and 1

4-ketone units in 1

3-hexafluoro-2-propanol and reprecipitating with methanol．Optical rotation

elemental analysis

spectra of 1H-NMR

13C-NMR and IR showed that our copolymer was optically active

isotatic

alternating poly(1

4-ketone) structure．The copolymerization was carried out at 45℃ for 48 h．Molecular weight：Mn=4.02×103

Mw／Mn=1.55 (GPC measurements with polystyrene standards)．Optical rotation：[α]20589=+63。 (CH2Cl2

5.0 mg／mL)．Tm=194℃

Tg=11℃．

关键词

阳离了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

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