One-step method for the synthesis of aryl olefins from aryl aldehydes and aliphatic aldehydes
作者:Hanumant B. Borate、Supriya H. Gaikwad、Ananada S. Kudale、Subhash P. Chavan、Shrikant G. Pharande、Vitthal D. Wagh、Vikram S. Sawant
DOI:10.1016/j.tetlet.2013.01.008
日期:2013.3
A conceptually newone-step reaction affording unexpected aryl olefinic product from aromatic aldehyde, aliphatic aldehyde and malononitrile in the presence of acetic acid-ammonium acetate under mild reaction conditions without using any metal catalyst is reported. This novel reaction was used to prepare a number of substituted aryl olefins including new molecules.
Aliphatic aldehydes in multicomponent syntheses of 4-alkyl-substituted partially hydrogenated quinolines, fused 4H-pyrans, and 2-amino-4-ethyl-5-methylbenzene-1,3-dicarbonitrile
作者:V. D. Dyachenko、A. N. Chernega
DOI:10.1134/s1070428006040142
日期:2006.4
The Knoevenagel condensation of aliphatic aldehydes with CH acids, malonodinitrile, cyanothioacetamide, cyclohexane-1,3-dione, dimedone, 4-hydroxycoumarin, 3-aminophenol, and N-(cyclohex-1-enyl)morpholine leads to formation of 4-alkyl-substituted partially hydrogenated quinolines, fused 4H-pyrans, and 2-amino-4-ethyl-5-methylbenzene-1,3-dicarbonitrile. The structure of the latter was proved by the X-ray diffraction data.
One-step synthesis of 4-alkyl-3-aryl-2,6-dicyanoanilines and their use in the synthesis of highly functionalized 2,3,5,6,7- and 2,3,4,5,7-substituted indoles
作者:Sangmeshwer P. Sawargave、Ananada S. Kudale、Jaydeep V. Deore、Dattatry S. Bhosale、Jaisingh M. Divse、Subhash P. Chavan、Hanumant B. Borate
DOI:10.1016/j.tetlet.2011.08.064
日期:2011.10
A three-component, one-step method for the synthesis of 4-alkyl-3-aryl-2,6-dicyanoanilines involving reaction of alkyl aldehyde, malononitrile and aryl aldehyde in presence of morpholine is reported. Highly functionalized 2,3,5,6,7- and 2,3,4,5,7-substituted indoles were prepared from these dicyanoanilines by reaction with ethyl bromoacetate. These substituted dicyanoanilines and indoles have a potential to be converted into various other compounds taking advantage of various functional groups present in these molecules. (C) 2011 Elsevier Ltd. All rights reserved.
Synthesis of Substituted Cyclobutane and Aniline Derivatives by Condensation of Aliphatic Aldehydes with Malonodinitrile