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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 26, Number 8
BKCSDE 26(8)
August 20, 2005 

Density Functional Theory Demonstration of Anomeric Effect and Structure: Conformational and Configurational Analysis of N-2-(1,4-Dioxane)-N'-(4-methylbenzenesulfonyl)-O-(4-methylphenoxy) Isourea
Hossein A. Dabbagh*, Ali Reza Najafi Chermahini, Ali Reza Modarresi-Alam
DFT, Anomeric effect, Conformational analysis, Configurational analysis, Hydrogen bonding
The conformational, configurtational behavior and the structure of N-2-(1,4-Dioxane)-N'-(4- methylbenzenesulfonyl)-O-(4-methylphenoxy) isourea 1 has been studied using DFT method. Calculations predict the imidoyl amino group of the dioxane ring prefers axial conformation and that the tosyl and tolyl groups about the C=N bond retain E configuration. The anomeric effect controls the population of dioxane ring conformers, and anomers. Intramolecular hydrogen bonds contribute to the stability of E isomers. The computational analysis of 1 complements the X-ray findings.
1229 - 1234
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