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 highly efficient 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
由强羧酸[特别是三氟乙酸铑(II)铑]制成的新型高效催化剂,由芳烃和重氮酯制备取代的环庚三烯羧酸盐,与经典的布赫纳方法相反,这些铑催化剂特别导致了1-异构体(3),避免其随后的质子转化为共轭异构体。