acetonitrile is an effective catalyst for reactions of aryl and alkyl bromides with styrene and methyl acrylate. With styrene, the reaction yields vinyl hydrogen replacement (condensation) products, viz. stilbenes and β-alkylstyrenes. Methyl acrylate reacts to give conjugated addition (hydrocondensation) products, methylesters of β-aryl and β-alkyl propionic acids.
A general, highly efficient and regioselective methoxycarbonylation, by means of a palladium-salicylicborate-catalyzed protocol, of terminal alkyl and aryl olefins is described. The substrates include aliphatic alkenes, allylbenzenes, and styrene derivatives. The yields are very good (60-92%) and the regioselectivity, in favor of the linear ester, is up to quantitative-unprecedented in the case of styrenes.
Lebedev, S. A.; Lopatina, V. S.; Berestova, S. S., Journal of Organic Chemistry USSR (English Translation), 1986, vol. 22, p. 1238 - 1241
作者:Lebedev, S. A.、Lopatina, V. S.、Berestova, S. S.、Petrov, E. S.、Beletskaya, I. P.
DOI:——
日期:——
TERENTEV A. B., IZV. AN CCCP, CEP. XIM., 1977, HO 11,