The prevalence of solvent effects in heterogeneous catalysis in condensed media has motivated developing quantitative kinetic, spectroscopic, and theoretical assessments of solvent structures and their interactions with reaction intermediates. 89343-06-6, Name is Ethynyltriisopropylsilane, SMILES is CC([Si](C(C)C)(C#C)C(C)C)C, belongs to naphthyridine compound. In a document, author is Kobayashi, Katsuaki, introduce the new discover, Quality Control of Ethynyltriisopropylsilane.
A RhCp* (Cp* = pentamethylcyclopentadienyl) complex bearing an NAD(+)/NADH-functionalized ligand, [RhCp*(pbn)Cl]Cl ([1] Cl, pbn = (2-(2-pyridyl) benzo[b]-1,5-naphthyridine)), was synthesized. The cyclic voltammogram of [1]Cl in CH3CN shows two reversible redox waves at E-1/2 = -0.58 and -1.53 V (vs. the saturated calomel electrode (SCE)), which correspond to the Rh-III/Rh-I and pbn/pbn(center dot-) redox couples, respectively. The addition of acetic acid to the solution afforded the proton-coupled two-electron reduction of [1]Cl at -0.62 V, from which [RhCp*(pbnHH)Cl](+) was selectively generated, probably via a hydride transfer from a Rh-III-hydride intermediate to the pbn ligand. Complex [1]Cl is stable under acidic conditions, whereas a methyl proton of the Cp* moiety dissociates under basic conditions. The resulting anionic methylene group attacks the para carbon of the free pyridine of pbn, accompanied by protonation of the nitrogen atom of the ligand. As a result, treatment of [1]Cl with a base produces selectively the cyclic complex [1CH]Cl, which bears a reduced pbn framework (pbnCH). [1CH]Cl forms 1 : 1 adducts with PhCOO-via hydrogen bonding. A similar adduct, formed by a Ru-pbnHH scaffold and RCOO-(R = CH3, C6H5), has been reported to react with CO2 to produce HCOO-under concomitant regeneration of Ru-pbn. The adduct of [1CH]Cl with PhCOO-, however, lacks such hydride-donor ability, due to a steric barrier in the molecular structure of [1CH]Cl, which hampers the hydride transfer.
The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction. 89343-06-6. The above is the message from the blog manager. Quality Control of Ethynyltriisopropylsilane.
Reference:
1,8-Naphthyridine – Wikipedia,
,1,8-Naphthyridine | C8H6N2 – PubChem