Generic placeholder image

Letters in Organic Chemistry

Editor-in-Chief

ISSN (Print): 1570-1786
ISSN (Online): 1875-6255

Ring Versus Nitrogen Protonation of Anilines

Author(s): Robert Flammang, Noemie Dechamps, Laurent Pascal, Yves Van Haverbeke, Pascal Gerbaux, Pham-Cam Nam and Minh Tho Nguyen

Volume 1, Issue 1, 2004

Page: [23 - 30] Pages: 8

DOI: 10.2174/1570178043488725

Abstract

Ionization of mixtures of halogenobenzenes and ammonia under chemical ionization conditions affords isomeric (N or C4) protonated anilines. The N-protonated species are dominantly produced by ionmolecule reactions of mass-selected ionized halogenobenzenes with ammonia or in electrospray conditions. Quantum chemical calculations confirm that the N-protonation in aniline is marginally favored, by about 4 kJ mol-1, over the C4-protonation.

Keywords: aniline proton affinity, chemical ionization, electrospray ionization, ion-molecule reactions, collision-induced dissociations


© 2024 Bentham Science Publishers | Privacy Policy