ResearchBib Share Your Research, Maximize Your Social Impacts
Sign for Notice Everyday Sign up >> Login

Water extract of onion catalyzed Knoevenagel condensation reaction: an efficient green procedure for synthesis of α-cyanoacrylonitriles and α-cyanoacrylates

Journal: Asian Journal of Green Chemistry (Vol.3, No. 2)

Publication Date:

Authors : ; ; ;

Page : 137-152

Keywords : Knoevenagel product; Malononitrile; Aldehydes; Water extract of onion;

Source : Downloadexternal Find it from : Google Scholarexternal


A useful method for Knoevenagel condensation has been developed from the reaction between active methylene compound 1 and aldehyde 2 using the water extract of onion as a green catalyst. This method is suitable for variety of aldehydes including, substituted aromatic, aliphatic, α, β-unsaturated, and heterocyclic with malononitrile or ethyl cyanoacetate, and affords the α-cyanoacrylonitriles and α-cyanoacrylatesin excellent yields (Up to 98%). The products are isolated without column chromatography. The use of water extract of onion has several advantages such as low price, easy handling, simple work up procedure and environmentally benign.

Last modified: 2018-12-09 05:51:57