Comparison of the Reactivity Between 1,4- and 1,2-Dihydro NADH Models

Chem. J. Chinese Universities

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Comparison of the Reactivity Between 1,4- and 1,2-Dihydro NADH Models

JIAO Xiao-Yun, Zhang Ming-Tian, ZHU Xiao-Qing, CHENG Jin-Pei*

State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China

Received:2007-10-22 Revised:1900-01-01 Online:2008-06-10 Published:2008-06-10
Contact: CHENG Jin-Pei

Abstract

Abstract: Two series of NADH models: p-G-PNAH-1,4-2H and p-G-PNAH-1,2-2H are synthesized. The rate constants at different temperatures and the activation parameters for the reaction of two oxidants(p-chloranil and TMPA^+·) with these NADH models were determined in acetonitrile. The kinetics results reveal that the reactivity of 1,2-2H-isomer and 1,4-2H-isomer can be controlled by the remote substitutions. The reaction between GPNAH and p-chloranil was controlled by entropy while the reaction between GPNAH and TMPA^+· was controlled by enthalpy and entropy together. And the substituted effect of 1,2-2H-isomer is bigger than 1,4-2H-isomer.

Key words: NADH model, Bond dissociation energy, Kinetics, Thermodynamics

CLC Number:

O621

TrendMD:

JIAO Xiao-Yun, Zhang Ming-Tian, ZHU Xiao-Qing, CHENG Jin-Pei*. Comparison of the Reactivity Between 1,4- and 1,2-Dihydro NADH Models[J]. Chem. J. Chinese Universities, doi: .

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Comparison of the Reactivity Between 1,4- and 1,2-Dihydro NADH Models

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