Spectrometric Study of the Nitrile-Ketenimine Tautomerism | Zendy

Hebe Saraví Cisneros | Zendy; Sergio Luis Laurella | Zendy; Danila Ruiz | Zendy; Agustı́n Ponzinibbio | Zendy; Patricia E. Allegretti | Zendy; Jorge J. P. Furlong | Zendy

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Spectrometric Study of the Nitrile-Ketenimine Tautomerism

Author(s) -

Hebe Saraví Cisneros,

Sergio Luis Laurella,

Danila Ruiz,

Agustı́n Ponzinibbio,

Patricia E. Allegretti,

Jorge J. P. Furlong

Publication year - 2009

Publication title -

international journal of spectroscopy

Language(s) - English

Resource type - Journals

eISSN - 1687-9457

pISSN - 1687-9449

DOI - 10.1155/2009/408345

Subject(s) - ketenimine , tautomer , chemistry , nitrile , mass spectrum , fragmentation (computing) , computational chemistry , mass spectrometry , photochemistry , ion , organic chemistry , chromatography , computer science , operating system

Mass spectrometry is used to evaluate the occurrence of the nitrile-ketenimine tautomerism. Mass spectra of two differently substituted nitriles, ethyl-4,4-dicyano-3-methyl-3-butenoate and diethyl-2-cyano-3-methyl-2-pentenodiate are examined looking for common mass spectral behaviors. Ion fragmentation assignments for specific tautomers allow to predict the presence of the corresponding structures. Additionally, the mass spectrum and nuclear magnetic resonance spectra of ethyl-4,4-dicyano-2,2-diethyl-3-methyl-3-butenoate and that of the corresponding amination product support the occurrence of the ketenimine tautomer in the equilibrium

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