Title

Amino Effect on the Protonation of β-Aminoacrylonitrile

Abstract

The protonation of acrylonitrile (1) and of Z- and E-3-aminoacrylonitrile (5 and 9) was studied with the Gaussian-2 method. Ammoniumacrylonitrile ion formation is not important. Nitrilium ion formation is preferred in all cases, and the proton affinities are about 80 kJ/mol higher for aminoacrylonitrile. Remarkably, it is found that C2-protonation of 3-aminoacrylonitriles to form iminium ions can compete with nitrilium ion formation. β- Aminoacrylonitriles thus show propinquity to both acrylonitriles and enamines, and mechanistic and toxicological implications are discussed.

Department(s)

Chemistry

Keywords and Phrases

Acrylonitrile; Beta Aminoacrylonitrile; Enamine; Imine; Nitrile; Unclassified Drug; Chemical Structure; Deamination; Enthalpy; Hydrogen Bond; Proton Transport; Models; Molecular; Molecular Structure; Oxidation-Reduction; Protons; Quaternary Ammonium Compounds; Stereoisomerism

International Standard Serial Number (ISSN)

0893-228X; 1520-5010

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2005 American Chemical Society (ACS), All rights reserved.

PubMed ID

15720113

Share

 
COinS