On October 31, 2003, Elinson, M. N.; Fedukovich, S. K.; Zaimovskaya, T. A.; Vereshchagin, A. N.; Nikishin, G. I. published an article.Name: 2-(2,3-Dihydro-1H-inden-1-ylidene)malononitrile The title of the article was Electrocatalytic transformation of malononitrile and cycloalkylidenemalononitriles into spirotricyclic and spirotetracyclic compounds containing cyclopropane and pyrroline fragments. And the article contained the following:
Electrolysis of cycloalkylidenemalononitriles and malononitrile in MeOH in an undivided cell in the presence of the NaBr-NaOMe mediator system gives spirotricyclic compounds containing cyclopropane and pyrroline fragments in 50-77% yields. Spirobicyclic and spirotricyclic tetracyanocyclopropanes undergo electrolysis in alcs. to afford spirotricyclic and spirotetracyclic products containing cyclopropane and pyrroline fragments in 50-93% yields. The experimental process involved the reaction of 2-(2,3-Dihydro-1H-inden-1-ylidene)malononitrile(cas: 2510-01-2).Name: 2-(2,3-Dihydro-1H-inden-1-ylidene)malononitrile
The Article related to electrocatalytic spirocyclization malononitrile cycloalkylidenemalononitrile spirotricyclic spirotetracyclic cyclopropane pyrroline, Physical Organic Chemistry: Oxidation-Reduction, Including Dehydrogenation and Hydrogenolysis and other aspects.Name: 2-(2,3-Dihydro-1H-inden-1-ylidene)malononitrile
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts