Understanding the high reactivity of triazolinediones in Diels-Alder reactions. A DFT study

被引:7
|
作者
Fernandez-Herrera, Maria A. [1 ]
Zavala-Oseguera, Claudia [2 ]
Luis Cabellos, Jose [2 ]
Sandoval-Ramirez, Jesus [1 ]
Domingo, Luis R. [3 ]
Merino, Gabriel [2 ]
机构
[1] Benemerita Univ Autonoma Puebla, Fac Ciencias Quim, Puebla 72570, Pue, Mexico
[2] Ctr Invest & Estudios Avanzados, Dept Fis Aplicada, Unidad Merida, Merida 97310, Yuc, Mexico
[3] Univ Valencia, Dept Quim Organ, E-46100 Valencia, Spain
关键词
DFT study; Polar Diels-Alder reaction; Steroidal diene; TADs; STEPWISE MECHANISMS; OXIDATION; 4-PHENYL-1,2,4-TRIAZOLINE-3,5-DIONE; EFFICIENT;
D O I
10.1007/s00894-014-2207-7
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The participation of 4-substituted-1,2,4-triazoline-3,5-diones (TADs) in Diels-Alder reactions toward a series of dienes is studied at the M05-2X/6-31+G(d,p) level. These reactions show very low activation energies and complete endo selectivity, in agreement with the experimental data. For a dienic steroid model, the reaction presents an a-facial selectivity. Analysis of reactivity indices explains the superelectrophilic character of TADs, and low activation energy. The substituent and solvent effects are also evaluated.
引用
收藏
页数:7
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