Comments on the catalytic alkoxycarbonylation of alkynes

Dervisi, Athanasia ORCID: https://orcid.org/0000-0002-0590-5496, Edwards, Peter Gerald ORCID: https://orcid.org/0000-0001-6999-753X, Newman, Paul David ORCID: https://orcid.org/0000-0002-1808-1211, Tooze, Robert P., Coles, Simon J. and Hursthouse, Michael B. 1999. Comments on the catalytic alkoxycarbonylation of alkynes. Journal of the Chemical Society. Dalton Transactions 1999 (7) , pp. 1113-1120. 10.1039/a809624d

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Abstract

The alkoxycarbonyl complexes Pd(Ph2Ppy)2(CO2R)(OAc) where Ph2Ppy is 2-pyridyldiphenylphosphine and R = Me 1, Et 2, i-Pr 3 have been prepared from Pd(OAc)2 and Ph2Ppy in ethanol solution under an atmosphere of CO. Increasing the CO pressure favours the formation of palladium carbonyl species. In the presence of 2 mol equivalents of CF3CO2H, the complex Pd(Ph2Ppy)2(CO2CH3)(CF3CO2) 4 is isolated from methanol. Pd(Ph2Ppy)2(CO2CH3)Cl 5 has been obtained by the reaction of Pd(Ph2Ppy)2Cl2 with NaOCH3 in the presence of CO. 1 and 5 have been crystallographicaly characterised as trans isomers, a geometry confirmed for all the complexes by 13C NMR. The reactivity of the complexes toward alkynes and propadiene has been investigated and the π-allyl complex [Pd(Ph2Ppy)2{η3-C3H4C(CH3)[double bond, length half m-dash]CH2}][O2CCF3] 8 isolated and structurally characterised.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Subjects:	Q Science > QD Chemistry
Publisher:	Royal Society of Chemistry
ISSN:	0300-9246
Last Modified:	24 Oct 2022 10:51
URI:	https://orca.cardiff.ac.uk/id/eprint/46171

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