Badiger, Krishnappa B.; Kamanna, Kantharaju published an article in 2021, the title of the article was Knoevenagel condensation reaction catalysed by agro-waste extract as a greener solvent catalyst.Name: 2-((1H-Indol-3-yl)methylene)malononitrile And the article contains the following content:
This paper present a novel Knoevenagel reaction protocol for the condensation of aromatic/heteroaromatic aldehydes RCHO (R = 2-phenylethenyl, naphthalen-1-yl, furan-2-yl, 1H-indol-3-yl, etc.) with malononitrile to give 伪, 尾-unsaturated benzylidene derivs RCH=C(CN)2. The main focus of this work is to reveal the usability of agro-waste extracts as a catalyst in the Knoevenagel condensation. In addition, the present method describes direct isolation of the formed products without using organic solvent extraction and gives good yields product. The experimental process involved the reaction of 2-((1H-Indol-3-yl)methylene)malononitrile(cas: 75629-62-8).Name: 2-((1H-Indol-3-yl)methylene)malononitrile
The Article related to unsaturated benzylidene preparation green chem, aryl aldehyde malononitrile knoevenagel condensation agro waste extract catalyst, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Hydrocarbons (Saturated and Unsaturated Side Chains) and other aspects.Name: 2-((1H-Indol-3-yl)methylene)malononitrile
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts