Scandium-catalyzed regio- and stereospecific cis -1,4-polymerization of 1,3-cyclohexadiene and copolymerization with ethylene

Xiaofang Li; Zhaomin Hou

doi:10.1021/ma101835e

Scandium-catalyzed regio- and stereospecific cis -1,4-polymerization of 1,3-cyclohexadiene and copolymerization with ethylene

Xiaofang Li, Zhaomin Hou^*

^*Corresponding author for this work

RIKEN

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

In the presence of an activator such as [Ph₃C][B(C ₆F₅)₄] or [PhMe₂NH][B(C ₆F₅)₄], the half-sandwich scandium dialkyl complexes Cp'Sc(CH₂SiMe₃)₂(THF) (Cp' = C ₅Me₄SiMe₃ (1), C₅Me₅ (2), C₅H₃(SiMe₃)₂ (3)) showed excellent regio- and stereoselectivity for the polymerization of 1,3-cyclohexadiene (CHD) and its copolymerization with ethylene. The homopolymerization of CHD afforded soluble crystalline cis-1,4-linked poly(CHD)s with very high stereoselectivity (tacticity up to 99 mol %). The copolymerization of CHD with ethylene gave the corresponding copolymers with a wide range of CHD contents (10-67 mol %) in a regio- and stereospecific 1,4-cis fashion.

Original language	English
Pages (from-to)	8904-8909
Number of pages	6
Journal	Macromolecules
Volume	43
Issue number	21
DOIs	https://doi.org/10.1021/ma101835e
Publication status	Published - 9 Nov 2010
Externally published	Yes

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title = "Scandium-catalyzed regio- and stereospecific cis -1,4-polymerization of 1,3-cyclohexadiene and copolymerization with ethylene",

abstract = "In the presence of an activator such as [Ph3C][B(C 6F5)4] or [PhMe2NH][B(C 6F5)4], the half-sandwich scandium dialkyl complexes Cp'Sc(CH2SiMe3)2(THF) (Cp' = C 5Me4SiMe3 (1), C5Me5 (2), C5H3(SiMe3)2 (3)) showed excellent regio- and stereoselectivity for the polymerization of 1,3-cyclohexadiene (CHD) and its copolymerization with ethylene. The homopolymerization of CHD afforded soluble crystalline cis-1,4-linked poly(CHD)s with very high stereoselectivity (tacticity up to 99 mol %). The copolymerization of CHD with ethylene gave the corresponding copolymers with a wide range of CHD contents (10-67 mol %) in a regio- and stereospecific 1,4-cis fashion.",

author = "Xiaofang Li and Zhaomin Hou",

year = "2010",

month = nov,

day = "9",

doi = "10.1021/ma101835e",

language = "English",

volume = "43",

pages = "8904--8909",

journal = "Macromolecules",

issn = "0024-9297",

publisher = "American Chemical Society",

number = "21",

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TY - JOUR

T1 - Scandium-catalyzed regio- and stereospecific cis -1,4-polymerization of 1,3-cyclohexadiene and copolymerization with ethylene

AU - Li, Xiaofang

AU - Hou, Zhaomin

PY - 2010/11/9

Y1 - 2010/11/9

N2 - In the presence of an activator such as [Ph3C][B(C 6F5)4] or [PhMe2NH][B(C 6F5)4], the half-sandwich scandium dialkyl complexes Cp'Sc(CH2SiMe3)2(THF) (Cp' = C 5Me4SiMe3 (1), C5Me5 (2), C5H3(SiMe3)2 (3)) showed excellent regio- and stereoselectivity for the polymerization of 1,3-cyclohexadiene (CHD) and its copolymerization with ethylene. The homopolymerization of CHD afforded soluble crystalline cis-1,4-linked poly(CHD)s with very high stereoselectivity (tacticity up to 99 mol %). The copolymerization of CHD with ethylene gave the corresponding copolymers with a wide range of CHD contents (10-67 mol %) in a regio- and stereospecific 1,4-cis fashion.

AB - In the presence of an activator such as [Ph3C][B(C 6F5)4] or [PhMe2NH][B(C 6F5)4], the half-sandwich scandium dialkyl complexes Cp'Sc(CH2SiMe3)2(THF) (Cp' = C 5Me4SiMe3 (1), C5Me5 (2), C5H3(SiMe3)2 (3)) showed excellent regio- and stereoselectivity for the polymerization of 1,3-cyclohexadiene (CHD) and its copolymerization with ethylene. The homopolymerization of CHD afforded soluble crystalline cis-1,4-linked poly(CHD)s with very high stereoselectivity (tacticity up to 99 mol %). The copolymerization of CHD with ethylene gave the corresponding copolymers with a wide range of CHD contents (10-67 mol %) in a regio- and stereospecific 1,4-cis fashion.

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U2 - 10.1021/ma101835e

DO - 10.1021/ma101835e

M3 - Article

AN - SCOPUS:78149243197

SN - 0024-9297

VL - 43

SP - 8904

EP - 8909

JO - Macromolecules

JF - Macromolecules

IS - 21

ER -

Scandium-catalyzed regio- and stereospecific cis -1,4-polymerization of 1,3-cyclohexadiene and copolymerization with ethylene

Abstract

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