Synthesis of (4-arylpyrrolidin-2-ylidene) derivatives of cyclic β-dicarbonyl compounds from cinnamoyl precursors
作者:F. S. Pashkovskii、Yu. S. Dontsu、D. B. Rubinov、F. A. Lakhvich、V. F. Traven’、A. M. Borunov
DOI:10.1134/s1070428014110116
日期:2014.11
1,4-Conjugate Michael addition of nitromethane to the enone fragment of cinnamoyl derivatives of carbo- and heterocyclic beta-dicarbonyl compounds provided the corresponding nitromethyl derivatives. The chemoselective reduction of the nitro group in the latter afforded 4-arylpyrrolidin-2-ylidene derivatives of beta-dicarbonyl compounds in high yield. The reaction products with the heterocyclic beta-dicarbonyl fragment are formed as equilibrium mixture of E- and Z-rotamers in which the E-rotamer predominates.