Catalytic control of reactions of dipoles and carbenes; an easy and efficient synthesis of cycloheptatrienes from aromatic compounds by an extension of Buchner's reaction
作者:André J. Anciaux、Albert Demonceau、André J. Hubert、Alfred F. Noels、Nicole Petiniot、Philippe Teyssié
DOI:10.1039/c39800000765
日期:——
salts from strong carboxylic acids [particularly rhodium(II) trifluoroacetate] are novel and highlyefficient catalysts for the preparation of substituted cycloheptatriene carboxylates from aromatic hydrocarbons and diazo-esters, and in contrast with the classical Buchner procedures these rhodium catalysts lead specifically to the 1-isomer (3), avoiding its subsequent prototropic conversion into conjugated