116972-67-9Relevant academic research and scientific papers
Heterocyclization Reactions of Conjugated Heterocumulenes. Synthesis of Pyridine Derivatives by a Tandem Aza Wittig/Electrocyclization Strategy
Molina, Pedro,Arques, Antonio,Fresneda, Pilar M.,Vinader, Maria Victoria,Foces-Foces, Maria de la Concepcion,Cano, Felix Hernandez
, p. 307 - 314 (2007/10/02)
The aza Wittig reaction of iminophosphorane 3 with isocyanates leads to conjugated carbodiimides 4, which undergo electrocyclic ring closure to give ethyl 2-pyridinecarboxylates 5.Iminophosphorane 9 reacts with nitromethane and acetone in a 1:1 molar rati
