Pd‐Catalyzed Polymerization of Dienes that Involves Chain‐Walking Isomerization of the Growing Polymer End: Synthesis of Polymers Composed of Polymethylene and Five‐Membered‐Ring Units

Okada, Takeshi; Park, Sehoon; Takeuchi, Daisuke; Osakada, Kohtaro

doi:10.1002/anie.200701630

Cited by 76 publications

(43 citation statements)

References 27 publications

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“…The polymerization of monoalkyl substituted 1,6‐dienes, even though they contain less reactive inner olefin, also involves smooth cyclization in the presence of the Pd diimine complex 17. The obtained polymers do not contain alkyl branches, but the alkyl group in the polymer is included in the polymer chain as oligomethylene spacer between the cyclic groups (five‐membered rings).…”

Section: Polymerizations With Late Transition Metal Complexesmentioning

confidence: 99%

Novel Controlled Polymerization of Cyclo‐olefins, Dienes, and Trienes by Utilizing Reaction Properties of Late Transition Metals

Takeuchi

2011

Macro Chemistry & Physics

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Pd complexes with diimine ligands promote polymerization of cyclopentenes, 1,6‐dienes, and 1,6,11‐trienes to afford polymers having 1,2‐ or 1,3‐five‐membered ring in every repeating unit. The Pd complexes with C2 symmetrical structure catalyze the polymerization reactions to produce polymers with high stereoselectivity. Some of the obtained polymers show characteristic properties such as thermoreversible gelation and liquid crystal formation. Ni complexes bring about the cyclopolymerization of the dienes to afford polymers containing five‐ and/or six‐membered rings in controlled stereochemistry.magnified image

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Section: Polymerizations With Late Transition Metal Complexesmentioning

confidence: 99%

Novel Controlled Polymerization of Cyclo‐olefins, Dienes, and Trienes by Utilizing Reaction Properties of Late Transition Metals

Takeuchi

2011

Macro Chemistry & Physics

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“…Since Brookhart's seminal discovery, there has been numerous progress in the development of new Pd(II) -diimine catalysts, new polymerization reactions and new types of polymers, which are the subject of this review. Pd-catalyzed polymerization of cycloolefins, dienes, trienes [32][33][34][35][36][37][38][39][40][41][42][43] and norbornene type monomers [36,37] are not included in this review. Furthermore, there have been numerous studies on the polymerization and copolymerization of functionalized olefins or acrylates monomers to prepare various functionalized hyperbranched polymers using this class of catalysts [38][39][40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 97%

(α-Diimine)palladium catalyzed ethylene polymerization and (co)polymerization with polar comonomers

2015

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In this review, a recent development of cationic -diimine palladium(II) complexes for ethylene polymerization and copolymerization with polar functionalized comonomers was briefly described. First, the polymerization mechanism for this type of catalysts was discussed. Next, recent advances in ligand design were provided with special focus on the influence of ligand structures on the catalytic polymerization properties. Last, the ethylene homopolymerization and copolymerization with various polar comonomers, especially acrylate and vinyl ethers were summarized. palladium, -diimine, ethylene polymerization, polar comonomer

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“…Osakada and co-workers [113] firstly reported that Pd-catalyzed polymerization of dienes provided polymers with with trans-1,2-disubstituted 5-membered rings along the polymer chain. Then, Ye and co-workers [114] went further to invenstigate copolymerization of diethyl diallymalonate and ethylene and found that the closed-loop reaction also occurred to form 5-membered rings structure, the resultant polymer was lineared hyperbranched copolymer due to the five-membered rings embedded to the polymer main chain.…”

Section: Copolymerization Of Ethylene and Bifunctional Monomermentioning

confidence: 99%

Recent Research Progress of Branched and Functional Branched Polyethylene Prepared Using Ni- and Pd–Based Catalysts

Xiao

Zhou

Zheng

et al. 2010

Polymer-Plastics Technology and Engineering

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In this paper, the recent development of branched and functional branched polyethylene prepared using Ni-and Pd-based catalysts are reviewed. The influence of ligand species, steric effect, electronic effect and polymerization condition on branching density of resultant polymer prepared using Ni-and Pd-based catalysts is discussed. In addition, the review is also focused on functional branched polyethylene produced by copolymerization of ethylene and polar monomer and copolymerization mechanism.

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Pd‐Catalyzed Polymerization of Dienes that Involves Chain‐Walking Isomerization of the Growing Polymer End: Synthesis of Polymers Composed of Polymethylene and Five‐Membered‐Ring Units

Cited by 76 publications

References 27 publications

Novel Controlled Polymerization of Cyclo‐olefins, Dienes, and Trienes by Utilizing Reaction Properties of Late Transition Metals

Novel Controlled Polymerization of Cyclo‐olefins, Dienes, and Trienes by Utilizing Reaction Properties of Late Transition Metals

(α-Diimine)palladium catalyzed ethylene polymerization and (co)polymerization with polar comonomers

Recent Research Progress of Branched and Functional Branched Polyethylene Prepared Using Ni- and Pd–Based Catalysts

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