The thermal reaction of methyl 2-oxo-2H-pyran-5-carboxylates with substituted styrenes in the presence of 10% palladium on activated carbon afforded directly the corresponding methyl 4-biphenylcarboxylates in good yields. By the similar procedure, methyl 4-heteroaryl- and 4-alkyl-substituted benzoates were obtained from heteroaromatic olefins and alkenes, respectively.
Thompson, Neil J.; Goodby, John W.; Toyne, Kenneth J., Molecular Crystals and Liquid Crystals Science and Technology, Section A: Molecular Crystals and Liquid Crystals, 1992, vol. 214, p. 81 - 96
作者:Thompson, Neil J.、Goodby, John W.、Toyne, Kenneth J.