Comparative study on catalytic systems for the alternating and nonalternating CO/ethene copolymerization

Alicja Haras; Artur Michalak; Bernhard Rieger; Tom Ziegler

doi:10.1021/om050846h

Comparative study on catalytic systems for the alternating and nonalternating CO/ethene copolymerization

Alicja Haras, Artur Michalak, Bernhard Rieger, Tom Ziegler

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47 Scopus citations

Abstract

Drent et al. [Chem. Commun. 2002, 9, 964] have recently shown that a neutral (P-O)Pd(II) catalyst based on o-alkoxy derivatives of diphenylphosphinobenzene sulfonic acid (la) can perform nonalternating CO/C ₂H₄ copolymerization in which the resulting polyketohe can have one or more subsequent ethylene units. We have analyzed this catalyst by comparing it to a cationic palladium catalyst, [(P-P)Pd(II)⁺] (1e), (P-P) = dppp = Ph₂P-(CH₂)₃-PPh₂, that affords polyketones with strictly alternating CO and C₂H ₄ units. We have also investigated a derivative (1b) of la in which the o-methoxy substituents were replaced by a o-isopropyl group in order to investigate whether increasing the steric bulk enhances the degree of nonalternation.

Original language	English
Pages (from-to)	946-953
Number of pages	8
Journal	Organometallics
Volume	25
Issue number	4
DOIs	https://doi.org/10.1021/om050846h
State	Published - 13 Feb 2006
Externally published	Yes

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abstract = "Drent et al. [Chem. Commun. 2002, 9, 964] have recently shown that a neutral (P-O)Pd(II) catalyst based on o-alkoxy derivatives of diphenylphosphinobenzene sulfonic acid (la) can perform nonalternating CO/C 2H4 copolymerization in which the resulting polyketohe can have one or more subsequent ethylene units. We have analyzed this catalyst by comparing it to a cationic palladium catalyst, [(P-P)Pd(II)+] (1e), (P-P) = dppp = Ph2P-(CH2)3-PPh2, that affords polyketones with strictly alternating CO and C2H 4 units. We have also investigated a derivative (1b) of la in which the o-methoxy substituents were replaced by a o-isopropyl group in order to investigate whether increasing the steric bulk enhances the degree of nonalternation.",

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T1 - Comparative study on catalytic systems for the alternating and nonalternating CO/ethene copolymerization

AU - Haras, Alicja

AU - Michalak, Artur

AU - Rieger, Bernhard

AU - Ziegler, Tom

PY - 2006/2/13

Y1 - 2006/2/13

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AB - Drent et al. [Chem. Commun. 2002, 9, 964] have recently shown that a neutral (P-O)Pd(II) catalyst based on o-alkoxy derivatives of diphenylphosphinobenzene sulfonic acid (la) can perform nonalternating CO/C 2H4 copolymerization in which the resulting polyketohe can have one or more subsequent ethylene units. We have analyzed this catalyst by comparing it to a cationic palladium catalyst, [(P-P)Pd(II)+] (1e), (P-P) = dppp = Ph2P-(CH2)3-PPh2, that affords polyketones with strictly alternating CO and C2H 4 units. We have also investigated a derivative (1b) of la in which the o-methoxy substituents were replaced by a o-isopropyl group in order to investigate whether increasing the steric bulk enhances the degree of nonalternation.

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Comparative study on catalytic systems for the alternating and nonalternating CO/ethene copolymerization

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