activation energies of various hydridetransferreactions was developed according to transition state theory using the Morse-type free energy curves of hydride donors to release a hydride anion and hydrideacceptors to capture a hydride anion and by which the activation energies of 187 typical hydride self-exchange reactions and more than thirty thousand hydride cross transferreactions in acetonitrile were
Thermodynamic Diagnosis of the Properties and Mechanism of Dihydropyridine-Type Compounds as Hydride Source in Acetonitrile with “Molecule ID Card”
作者:Xiao-Qing Zhu、Yue Tan、Chao-Tun Cao
DOI:10.1021/jp911137p
日期:2010.2.11
to release protons and hydrogens in acetonitrile, and the thermodynamic driving forces of the neutral pyridine-type radicals of the dihydropyridines to release electron in acetonitrile were determined by using titration calorimetry and electrochemical methods. The rates and activation parameters of hydride transfer from the dihydropyridines to acridinium perclorate, a well-known hydride acceptor, were
Reference LPI-ARTICLE-1989-011doi:10.1021/ja00191a029View record in Web of Science Record created on 2006-02-21, modified on 2017-05-12
参考 LPI-ARTICLE-1989-011doi:10.1021/ja00191a029在 Web of Science 记录中查看记录创建于 2006-02-21,修改于 2017-05-12
Mimicking Nature: Synthetic Nicotinamide Cofactors for C═C Bioreduction Using Enoate Reductases
作者:Caroline E. Paul、Serena Gargiulo、Diederik J. Opperman、Iván Lavandera、Vicente Gotor-Fernández、Vicente Gotor、Andreas Taglieber、Isabel W. C. E. Arends、Frank Hollmann
DOI:10.1021/ol303240a
日期:2013.1.4
A series of synthetic nicotinamide cofactors were synthesized to replace natural nicotinamide cofactors and promote enoate reductase (ER) catalyzed reactions without compromising the activity or stereoselectivity of the bioreduction process. Conversions and enantioselectivities of >99% were obtained for C=C bioreductions, and the process was successfully upscaled. Furthermore, high chemoselectivity was observed when employing these nicotinamide cofactor mimics (mNADs) with crude extracts in ER-catalyzed reactions.
Reactivity of biologically important reduced pyridines. IV. Effect of substitution on ferricyanide-mediated oxidation rates of various 1,4-dihydropyridines
作者:Marcus E. Brewster、Agnes Simay、Klara Czako、David Winwood、Hassan Farag、Nicholas Bodor