Reaction between 4-oxoalkane-1,1,2,2-tetracarbonitriles and morpholine: regioselective synthesis of 5-amino-2-(morpholin-4-yl)-3-(2-oxoalkyl)-3H-pyrrol-3,4-dicarbonitriles
A new approach to the regioselective synthesis of polyfunctional 3H-pyrroles from 4-oxoalkane-1,1,2, 2-tetracarbonitriles is described. 5-Amino-3-(2-aryl-2-oxoethyl)-3H-pyrrol-3,4-dicarbonitriles are prepared from 4-aryl-4-oxobutane-1,1,2,2-tetracarbonitriles. Diastereomeric 5-amino-2-morpholin-4yl-3-(2-oxocyclohexyl)-3H-pyrrole-3,4-dicarbonitriles were obtained from 1-(2-oxocyclohexyl)ethane-1,1,2,2-tetracarbonitriles. (C) 2011 Elsevier Ltd. All rights reserved.
Synthesis of 4-Formyl-3-cyclopentene-1,1,2-tricarbonitriles
作者:V. P. Sheverdov、O. V. Ershov、A. V. Eremkin、O. E. Nasakin、I. N. Bardasov、V. A. Tafeenko
DOI:10.1007/s11178-006-0034-8
日期:2005.12
β,β,γ,γ-Tetracyanoalkanones react with acrolein at a high rate to afford the corresponding 2-substituted 4-formyl-3-cyclopentene-1,1,2-tricarbonitriles in high yields. The reaction occurs under mild conditions and is quite applicable for modification of natural and biologically active compounds possessing an R′CHC(O)CR3 fragment to obtain their derivatives containing three cyano groups.