期刊
TETRAHEDRON
卷 70, 期 6, 页码 1207-1213出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2013.12.061
关键词
Push-pull CF3-aminoenones; Hydrogen bonds; NMR/IR/DFT study; NBO analysis
资金
- Russian Foundation for the Basic Research [13-03-00063-a]
Postulated conformers of trifluoromethylated beta-aminoenones stabilized by intramolecular NH...O and N...HO bonds were studied by IR and NMR spectroscopy and evaluated with quantum chemical calculations (B3LYP/6-311+G(d,p), MP2/6-311+G(d,p)//B3LYP/6-311+G(d,p) and MP216-31G(d,p)) and NBO analysis. The influence of the nature of EWG, substituents at the nitrogen atom and double bond, and of orbital interactions of heteroatoms and double bonds in these structures on the proton affinity of basic and acid centers, strength of hydrogen bonds, and the energy of tautomeric transfers is discussed. The theoretical results agree satisfactorily with the experimental observations. (C) 2014 Elsevier Ltd. All rights reserved.
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