93619-36-4Relevant academic research and scientific papers
Iminophosphorane-Mediated Synthesis of Mesoionic 1,3,4-Oxadiazolopyridinylium-2-aminides
Molina, Pedro,Alajarin, Mateo,Vega, Maria Jesus Perez de,Foces-Foces, Maria de la Concepcion,Canon, Felix Hernandez
, p. 1495 - 1500 (2007/10/02)
Reaction of iminophosphorane 2 with methyl isocyanate yields the mesoionic 1,3,4-oxadiazolopyridinylium-2-methylaminide 3, which undergoes N-methylation with CF3SO3CH3 to give the 1,3,4-oxadiazolopyridinium cation 4.The structure of compound 4 has been established by means of X-ray crystallography.Mesoionic aminide 3 undergoes rearrangement by the action of base to give the isomeric mesoionic compound 1,3,4-triazolopyridinylium-2-olate 11.Compound 3 by the action of (arylimino)triphenylphosphoranes is converted into the corresponding 1,3,4-oxadiazolopyridinylium-2-arylaminides 12, which can be also prepared from iminophosphorane 2 and hydroximoyl chlorides.
Fused Mesoionic Heterocycles: Synthesis of 1,3,4-Triazolopyridine Derivatives
Molina, Pedro,Alajarin, Mateo,Argues, Antonio,Benzal, Raimundo,Hernandez, Higinio
, p. 1891 - 1897 (2007/10/02)
A number of mesoionic derivatives of 1,3,4-triazolopyridine have been prepared.The 1,3,4-oxadiazolopyridylium-2-aminides , available from 1,3,4-oxadiazolopyridylium-2-olate (12) and N-aryliminotriphenylphosphoranes, under
