PMID: 11929251Apr 4, 2002Paper

Mechanism of propylene insertion using bis(phenoxyimine)-based titanium catalysts: an unusual secondary insertion of propylene in a group IV catalyst system

Journal of the American Chemical Society
Phillip D HustadGeoffrey W Coates

Abstract

A highly regioselective secondary enchainment of propylene in a group IV catalyst system is reported. End-group analysis of polypropylene formed using the phenoxyimine-based titanium catalysts revealed a reversal in the regioselectivity of insertion for this class of catalysts. To the best of our knowledge, bis(phenoxyimine)-based titanium complexes are the only known group IV catalysts that insert propylene with exclusive 2,1-regiochemistry. Insertion of propylene into the initiating titanium hydride occurs with high 1,2-regiochemistry. Subsequent insertions into primary titanium alkyls are regiorandom, while insertions into secondary titanium alkyls proceed with high 2,1-regioselectivity. Cyclopolymerization and ethylene/propylene copolymerization strategies are employed to support this proposal.

References

Dec 26, 2001·Chemical Reviews·L ResconiF Piemontesi
Dec 26, 2001·Chemical Reviews·G G Hlatky

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Citations

May 24, 2008·Chemical Society Reviews·Tomoaki Matsugi, Terunori Fujita
Dec 4, 2008·Dalton Transactions : an International Journal of Inorganic Chemistry·Giles W TheakerPeter Scott
May 7, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·Jochen NiemeyerGerhard Erker
Oct 15, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·Ekaterina GrunovaJean-François Carpentier
Oct 15, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·Ai-Quan Jia, Guo-Xin Jin
Oct 15, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·Xiao-Hong YangYong Tang
Jul 14, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Yu-Ning ChangLan-Chang Liang
May 20, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Yuguo MaGeoffrey W Coates
Nov 17, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Takafumi KawakamiKyoko Nozaki
Oct 15, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·Daisuke TakeuchiKohtaro Osakada
May 16, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Ping TaoYue-Sheng Li
Dec 22, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·Daisuke Takeuchi
Mar 22, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Haruyuki MakioTerunori Fujita
Dec 14, 2011·Chemistry : a European Journal·Loi-Chi SoNianyong Zhu
Mar 23, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Lan-Chang LiangMing-Tsz Chen
May 29, 2012·Chemical Communications : Chem Comm·Rachel C KletJohn E Bercaw
Feb 14, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·James A SuttilStephen J Evans
Dec 22, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·Jean-François Carpentier
Jan 22, 2011·Chemical Reviews·Haruyuki MakioTerunori Fujita
Jun 12, 2021·Chemistry : a European Journal·Xiaoqiang HuZhongbao Jian
Nov 28, 2020·Accounts of Chemical Research·Stephen L J Luckham, Kyoko Nozaki
Aug 1, 2018·Inorganic Chemistry·Phongnarin ChumsaengKhamphee Phomphrai
Nov 7, 2002·Journal of the American Chemical Society·Giuseppe MilanoGaetano Guerra

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