Benzoylation of deactivated compounds of the thiophene and furan series with phenyldichlorocarbenium tetrachloroaluminate

LI Belen'kii, GP Gromova, AV Kolotaev…

Index: Belen'kii; Gromova; Kolotaev; Krayushkin Chemistry of Heterocyclic Compounds, 2000 , vol. 36, # 3 p. 256 - 263

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Citation Number: 4

Abstract

Abstract The reactions of benzotrichloride with methyl and ethyl esters and nitriles of 2- thiophenecarboxylic and 2-furancarboxylic acids, with 2-acetylthiophene, 2-acetylfuran, and 2-thiophenaldehyde in the presence of an excess of anhydrous aluminum chloride have been studied. The phenyldichloromethyl group enters into position 4 of the thiophene and position 5 of the furan ring and on treating the reaction mixture with water is converted to ...