Premium
Cover Picture: Suppression Mechanism for Enol–Enol Isomerization of 2‐Substituted Dimedones (Asian J. Org. Chem. 9/2015)
Author(s) -
China Hideyasu,
Okada Yutaka,
Dohi Toshifumi
Publication year - 2015
Publication title -
asian journal of organic chemistry
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.846
H-Index - 44
eISSN - 2193-5815
pISSN - 2193-5807
DOI - 10.1002/ajoc.201500300
Subject(s) - isomerization , chemistry , enol , intramolecular force , photochemistry , intermolecular force , hydrogen bond , relaxation (psychology) , keto–enol tautomerism , computational chemistry , tautomer , stereochemistry , organic chemistry , catalysis , molecule , psychology , social psychology
Line shape analysis . of cyclic β‐diketones showed the significant temperature dependence with negative activation energy of the intramolecular chemical exchange in enol‐enol isomerism. This extraordinary phenomenon indicated suppression of the isomerization. Relaxation and diffusion analyses of the isomerism clarified the contribution of intermolecular hydrogen bond formation, involving interaction with water, for the isomerization. A bright chemistry of isomerism was created by contemplating the suppression mechanism of the enol‐enol isomerization. More information can be found in the Full Paper on page 952 by H. China et al. (DOI: 10.1002/ajoc.201500069).