On January 31, 2009, Liang, Jing; Zhang, Meimei; Wei, Xianyong; Zong, Zhimin; Wang, Xiangshan published an article.Application In Synthesis of 2-(2,3-Dihydro-1H-inden-1-ylidene)malononitrile The title of the article was One-step synthesis of fluorene or phenanthrene derivatives via the reaction of arylaldehyde and malononitrile with 2-(1,2-dihydroinden-3-ylidene)malononitrile or 2-(2,3-dihydronaphthalen-4(1H)-ylidene)-malononitrile catalyzed by KF/Al2O3 in ethyl alcohol. And the article contained the following:
A method for the synthesis of the title compounds [i.e., 3-amino-1-(phenyl)-9H-fluorene-2,4-dicarbonitrile derivatives and 3-amino-1-(phenyl)-9,10-dihydro-2,4-phenanthrenedicarbonitrile derivatives] is reported here. A series of fluorene or phenanthrene derivatives was synthesized from aryl aldehyde derivatives, malononitrile and 2-(1,2-dihydro-3-indenylidene)malononitrile or 2-(2,3-dihydro-4-naphthalenylidene)malononitrile catalyzed by KF/Al2O3 at 80° in ethanol. This method has the advantages, such as mild reaction conditions, high yields (72-88%) and easy operation. The structures of the products were characterized by IR, NMR, elemental anal. The experimental process involved the reaction of 2-(2,3-Dihydro-1H-inden-1-ylidene)malononitrile(cas: 2510-01-2).Application In Synthesis of 2-(2,3-Dihydro-1H-inden-1-ylidene)malononitrile
The Article related to phenanthrene amino phenyl phenanthrenedicarbonitrile preparation, fluorene amino phenyl fluorenedicarbonitrile preparation, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Anthracenes and Phenanthrenes and other aspects.Application In Synthesis of 2-(2,3-Dihydro-1H-inden-1-ylidene)malononitrile
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts