Synthesis of regular polyhexene in perfluoromethylcyclohexane

Yakovlev, S. V.; Artem’ev, G. A.; Rasputin, Nikolay A.; Rusinov, P.G.; Nifant’ev, Ilya E.; Charushin, Valery N.; Kopchuk, Dmitry S.

doi:10.1063/1.5087399

AIP Conference Proceedings

2019

DOI: 10.1063/1.5087399

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Synthesis of regular polyhexene in perfluoromethylcyclohexane

S. V. Yakovlev¹,

G. A. Artem’ev²,

Nikolay A. Rasputin³

et al.

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Cited by 4 publications

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“…is unreactive at room temperature for 48 h. The oligomerization of 1-hexene occurred upon heating (65 °C, C 6 D 5 Br, quantitative conv. of 1-hexene after 3 and 10 days for [1][B(C 6 F 5 ) 4 ] and[2][B(C 6 F 5 ) 4 ], respectively) as deduced from 1 H NMR data 26. Isolation of the products and subsequent GPC and MALDI-TOF analysis confirmed the formation of oligomers.Alkyne hydrosilylation catalyzed by [1][(B(C 6 F 5 ) 4 ] (5% mol).In the presence of 1-hexyne and HSiEt 3 (20 equiv of each), the Al salt [1][(B(C 6 F 5 ) 4 ] (5% mol.)…”

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confidence: 82%

NHC-stabilized Al(III) and Ga(III) cationic alkyls: Synthesis, structure and use in hydrosilylation catalysis

2021

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Cationic Al(III) and Ga(III) species supported by N-heterocyclic carbene (NHC) ligands, (IDipp)AlMe 2 (PhBr)] + ([1] + , IDipp = 1,3-bis(2,6-diisopropylphenyl)imidazolin-2ylidene) and (IDipp)GaMe 2 ] + ([2] + ), were prepared and structurally characterized as B(C 6 F 5 ) 4 salts via ionization of the corresponding neutral precursors (IDipp)MMe 3 (M = Al, Ga) with [Ph 3 C][B(C 6 F 5 ) 4 ] in PhBr at room temperature. Both [1][B(C 6 F 5 ) 4 ] and [2][B(C 6 F 5 ) 4 ] salt were isolated in high yield and their solid state structures established through X-ray crystallographic studies. Cations [1] + and [2] + , which are rare examples of structurally characterized tris-organyl Al(III) and Ga(III) cations, stand as potent Lewis acids as experimentally estimated through the Gutmann-Beckett method. These cations were further exploited in hydrosilylation catalysis of alkynes, benzaldehyde and CO 2 using HSiEt 3 as an hydrosilane source. Hydrosilylation of 1-hexyne, 4-phenylbutyne and phenylacetylene led to the formation of the corresponding Z-selective products 3-5, respectively, while benzaldehyde was converted to PhCH 2 OSiEt 3 (6). Cations [1] + and [2] + also slowly catalyze CO 2 hydrosilylation with the selective formation of the methanol-equivalent MeOSiEt 3 .

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NHC-stabilized Al(III) and Ga(III) cationic alkyls: Synthesis, structure and use in hydrosilylation catalysis

2021

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Synthesis of Ultra-High-Molecular-Weight Polyethylene with an Elevated Melting Point in an Octafluorobutane Medium

et al. 2023

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Synthesis of Ultra-High Molecular Weight Polyolefins of Regular Structure in Octafluorobutane Medium

et al. 2021

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Synthesis of regular polyhexene in perfluoromethylcyclohexane

Cited by 4 publications

References 1 publication

NHC-stabilized Al(III) and Ga(III) cationic alkyls: Synthesis, structure and use in hydrosilylation catalysis

NHC-stabilized Al(III) and Ga(III) cationic alkyls: Synthesis, structure and use in hydrosilylation catalysis

Synthesis of Ultra-High-Molecular-Weight Polyethylene with an Elevated Melting Point in an Octafluorobutane Medium

Synthesis of Ultra-High Molecular Weight Polyolefins of Regular Structure in Octafluorobutane Medium

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