Literature DB >> 16201780

A C2-symmetric, living alpha-diimine Ni(II) catalyst: regioblock copolymers from propylene.

Anna E Cherian1, Jeffrey M Rose, Emil B Lobkovsky, Geoffrey W Coates.   

Abstract

An isomerically pure, C2-symmetric Ni(II) complex was synthesized and found to be living for propylene polymerization. The regioselectivity of the catalyst varied greatly with reaction temperature, with regioregular, highly isotactic polypropylene (PP) produced at low temperatures, and regioirregular PP produced at high temperatures. Regioblock PP was formed by changing the reaction temperature during the polymerization.

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Year:  2005        PMID: 16201780     DOI: 10.1021/ja0540021

Source DB:  PubMed          Journal:  J Am Chem Soc        ISSN: 0002-7863            Impact factor:   15.419


  5 in total

1.  Semicrystalline thermoplastic elastomeric polyolefins: Advances through catalyst development and macromolecular design.

Authors:  Atsushi Hotta; Eric Cochran; Janne Ruokolainen; Vikram Khanna; Glenn H Fredrickson; Edward J Kramer; Yong-Woo Shin; Fumihiko Shimizu; Anna E Cherian; Phillip D Hustad; Jeffrey M Rose; Geoffrey W Coates
Journal:  Proc Natl Acad Sci U S A       Date:  2006-10-10       Impact factor: 11.205

2.  Synthesis and coordination chemistry of tri-substituted benzamidrazones.

Authors:  Mark R Crimmin; Denise A Colby; Jonathan A Ellman; Robert G Bergman
Journal:  Dalton Trans       Date:  2010-11-25       Impact factor: 4.390

3.  Synthesis of a Ni Complex Chelated by a [2.2]Paracyclophane-Functionalized Diimine Ligand and Its Catalytic Activity for Olefin Oligomerization.

Authors:  Daisuke Takeuchi; Yoshi-Aki Tojo; Kohtaro Osakada
Journal:  Molecules       Date:  2021-05-05       Impact factor: 4.411

4.  Ligand-controlled insertion regioselectivity accelerates copolymerisation of ethylene with methyl acrylate by cationic bisphosphine monoxide-palladium catalysts.

Authors:  Yusuke Mitsushige; Brad P Carrow; Shingo Ito; Kyoko Nozaki
Journal:  Chem Sci       Date:  2015-11-03       Impact factor: 9.825

Review 5.  N,N-chelated nickel catalysts for highly branched polyolefin elastomers: a survey.

Authors:  Qaiser Mahmood; Wen-Hua Sun
Journal:  R Soc Open Sci       Date:  2018-07-25       Impact factor: 2.963

  5 in total

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