REACTIONS OF 1-ARYL-2,5-DIMETHYLPYRROLES WITH KETONES
DOI:
https://doi.org/10.1007/1070Abstract
1-Aryl-2,5-dimethylpyrroles react with acyclic ketones with acid catalysis to give geminal di-2-pyrrolyl derivatives independently of the ratio of the reagents. The reaction of cyclohexanone and cycloheptanone occurs analogously with 2:1 ratio of pyrrole to ketone. With an excess of cyclohexanone or cycloheptanone 1-aryl-2,5-dimethyl-3,4-dicyclohexenylpyrroles and substituted 4,5,6,7,8,9-hexahydro-2H-azulene[1,2-c]pyrrol-4-spirocycloheptane are produced respectively.
Authors: O. Pushechnikov, S. P. Ivonin, A. A. Chaikovskaya, T. N. Kudrya, V. V. Pirozhenko, and A. A. Tolmachev.
English Translation in Chemistry of Heterocyclic Compounds, 1999, 35 (11), pp 1313-1318