Incorporation of CO 2 in Butadiene Dimerization Catalyzed by Palladium Complexes. Formation of 2-Ethylidene-5-hepten-4-olide

Y Inoue, Y Sasaki, H Hashimoto

Index: Inoue,Y. et al. Bulletin of the Chemical Society of Japan, 1978 , vol. 51, p. 2375 - 2378

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Citation Number: 62

Abstract

Reaction of carbon dioxide with butadiene catalyzed by palladium–phosphine complexes was studied. When the reaction was carried out in certain polar, aprotic solvents, such as dimethylformamide (DMF), 2-ethylidene-5-hepten-4-olide was formed in about 5% yield by the incorporation of CO 2 together with the formation of butadiene linear dimers. The main dimer was 1, 3, 7-octatriene. The ditertiary phosphines, R 2 PCH 2 CH 2 CH 2 PR 2 where ...