Ab initio molecular orbital study of the reactivity of active alkyl groups. VI. Modified reaction model for the elimination process of nitrosation reaction.

Autor: Ikeda H; Faculty of Pharmaceutical Sciences, Fukuoka University, Japan., Yukawa M, Niiya T
Jazyk: angličtina
Zdroj: Chemical & pharmaceutical bulletin [Chem Pharm Bull (Tokyo)] 2005 Jul; Vol. 53 (7), pp. 820-5.
DOI: 10.1248/cpb.53.820
Abstrakt: The mechanisms of nitrosation of acetone through sodium enolate [CH3COCH2]- Na+ (1) or naked enolate [CH3COCH2]- (2) with tert-butyl nitrite (CH3)3CONO (3) were studied using ab initio molecular orbital (MO) methods. When the modified complex model was used in the elimination process, our results demonstrated the predominant formation of E-1-hydroxy-imino-2-oxo-propane CH3COCH=NOH (4E), in which a counter-cation of the base catalyst did not participate during the reaction. On the other hand, participation of the counter-cation during the reaction contributed to the formation of the Z-isomer of 4 (4Z).
Databáze: MEDLINE