Martin, Nazario; Quinteiro, Margarita; Seoane, Carlos; Soto, Jose L. published an article in 1987, the title of the article was Synthesis of some polyheterocyclic systems with isolated nuclei.SDS of cas: 75629-62-8 And the article contains the following content:
Knoevenagel-type condensation reactions of heterocyclic aldehydes were carried out. Thus, treatment of RCHO (R = pyridyl, pyrrolyl, furyl, etc.) with active methylene compounds PhCOCH2R1 (R1 = CN, CO2Et) in EtOH containing piperidine afforded benzoylheteroarylacrylonitrile and -acrylates RCH:CR1COPh (I). The I underwent cyclization with malononitrile to give 4H-pyrans II. The experimental process involved the reaction of 2-((1H-Indol-3-yl)methylene)malononitrile(cas: 75629-62-8).SDS of cas: 75629-62-8
The Article related to pyrancarbonitrile heteroaryl, pyridineacrylonitrile benzoyl, furanacrylonitrile benzoyl, pyrroleacrylonitrile benzoyl, thiopheneacrylonitrile benzoyl, indoleacrylonitrile benzoyl, aldehyde knoevenagel condensation benzoylacetonitrile, acetonitrile benzoyl condensation aldehyde, acetate benzoyl condensation aldehyde and other aspects.SDS of cas: 75629-62-8
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts