[1,2,3]Triazolo[1,5-a]pyridines. A theoretical (DFT) study of the ring-chain isomerization

被引:18
作者
Blanco, Fernando [1 ]
Alkorta, Ibon [1 ]
Elguero, Jose [1 ]
Cruz, Victor [2 ]
Abarca, Belen [3 ]
Ballesteros, Rafael [3 ]
机构
[1] CSIC, Inst Quim Med, E-28006 Madrid, Spain
[2] CSIC, Inst Estructura Mat, E-28006 Madrid, Spain
[3] Univ Valencia, Fac Farm, Dept Quim Organ, E-46100 Valencia, Spain
关键词
Triazolopyridine; Isomerization; Substituent effects; Protonation; Deprotonation; Lithiation;
D O I
10.1016/j.tet.2008.09.064
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The ring opening isomerization of [1,2,3]triazolo[1,5-a]pyridines to the corresponding 2-pyridyl derivatives has been studied by means of DFT calculations at the B3LYP/6-31+G(d,p) computational level. The effect of the substitution as well as those of protonation, deprotonation, and lithiation on different positions has been studied. The electronic characteristics of the optimized structures have been analyzed by means of the Atoms in Molecules (AIM), Electron Localization Function (ELF), Molecular Electrostatic Potential (MEP), and Natural Bond Orbital (NBO) methodologies. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:11150 / 11158
页数:9
相关论文
共 39 条
[11]   CALCULATION OF THE AVERAGE PROPERTIES OF ATOMS IN MOLECULES .2. [J].
BIEGLERKONIG, FW ;
BADER, RFW ;
TANG, TH .
JOURNAL OF COMPUTATIONAL CHEMISTRY, 1982, 3 (03) :317-328
[12]   Substitution effects on neutral and protonated pyridine derivatives along the periodic table [J].
Blanco, Fernando ;
Donovan, Daniel H. O' ;
Alkorta, Ibon ;
Elguero, Jose .
STRUCTURAL CHEMISTRY, 2008, 19 (02) :339-352
[13]   A computational study of the effect of C-lithiation on the NMR properties (chemical shifts and coupling constants) of aziridines [J].
Capriati, Vito ;
Florio, Saverio ;
Luisi, Renzo ;
Musio, Biagia ;
Alkorta, Ibon ;
Blanco, Fernando ;
Elguero, Jose .
STRUCTURAL CHEMISTRY, 2008, 19 (05) :785-792
[14]  
DAVIS BR, 1970, INORG CHEM, V9, P2768
[15]  
FAN WQ, 1996, COMPREHENSIVE HETE 2, V4, P71
[16]  
Frisch M. J., 2004, GAUSSIAN 03 REVISION
[17]   Conceptual density functional theory [J].
Geerlings, P ;
De Proft, F ;
Langenaeker, W .
CHEMICAL REVIEWS, 2003, 103 (05) :1793-1873
[18]  
GLENDENING ED, NBO PROGRAM NBO 3 1
[19]   A standard set of pericyclic reactions of hydrocarbons for the benchmarking of computational methods: The performance of ab initio, density functional, CASSCF, CASPT2, and CBS-QB3 methods for the prediction of activation barriers, reaction energetics, and transition state geometries [J].
Guner, V ;
Khuong, KS ;
Leach, AG ;
Lee, PS ;
Bartberger, MD ;
Houk, KN .
JOURNAL OF PHYSICAL CHEMISTRY A, 2003, 107 (51) :11445-11459
[20]   A CORRELATION OF REACTION RATES [J].
HAMMOND, GS .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1955, 77 (02) :334-338