Photoconversion of polychlorinated naphthalenes in organic solvents under simulated sunlight: Solvent effect and mechanism

Phenethyl alcohol and some other specific solvents enhanced the production of cellulase by several fungi when added to culture growth media in minimal amounts. This solvent effect is considered to be cytoplasmic membrane-oriented. Cellulase synthesis possibly occurs in the same region of the cell.

Download Full-text

The Solvent Effect on the Electron-Transfer Reactions of Cobalt(III) Complexes. The Reduction of thecis-Chloro-2-aminoethanolbis(ethylenediamine)cobalt(III) Ion by Iron(II) in Aqueous Solutions of Organic Solvents

Bulletin of the Chemical Society of Japan ◽

10.1246/bcsj.44.3363 ◽

1971 ◽

Vol 44 (12) ◽

pp. 3363-3366 ◽

Cited By ~ 8

Author(s):

Kousaburo Ohashi ◽

Katsumi Yamamoto ◽

Toshio Suzuki ◽

Yoshimi Kurimura

Keyword(s):

Electron Transfer ◽

Aqueous Solutions ◽

Solvent Effect ◽

Organic Solvents ◽

Transfer Reactions ◽

Electron Transfer Reactions

Download Full-text

SOLVENT EFFECT AND KINETIC STUDY ON THE REACTION OF DIALKYL DISULPHIDE WITH TRIPHENYLPHOSPHINE IN AQUEOUS ORGANIC SOLVENTS

Main Group Metal Chemistry ◽

10.1515/mgmc.1997.20.9.627 ◽

1997 ◽

Vol 20 (9) ◽

Author(s):

Adil Μ. Al-sulaim

Keyword(s):

Solvent Effect ◽

Kinetic Study ◽

Organic Solvents

Download Full-text

Solvent Effect on the Liquid–Liquid Partition of 21H,23H-Porphine between Various Organic Solvents and Acidic Aqueous Solutions

Bulletin of the Chemical Society of Japan ◽

10.1246/bcsj.62.2520 ◽

1989 ◽

Vol 62 (8) ◽

pp. 2520-2523 ◽

Cited By ~ 3

Author(s):

Yoshito Wakui ◽

Hisanori Imura ◽

Nobuo Suzuki

Keyword(s):

Aqueous Solutions ◽

Solvent Effect ◽

Organic Solvents

Download Full-text

DFT study on the mechanism of simultaneous trifluoromethylation and oximation of aryl-substituted ethylene.

10.22541/au.163308871.12877238/v1 ◽

2021 ◽

Author(s):

Sen Wang ◽

Ao He ◽

Xuan Meng ◽

Xiao wei Lan ◽

Xianfu Wei ◽

...

Keyword(s):

Carbon Atom ◽

Proton Transfer ◽

Organic Solvent ◽

Solvent Effect ◽

Aromatic Ring ◽

Organic Solvents ◽

Energy Barrier ◽

Rate Limiting Step ◽

Limiting Step ◽

Rate Limiting

The effects of different substituents located at the para position of the aromatic ring and β carbon atom of the styrene on the reaction were investigated. The results showed that the reaction steps with higher energy barriers changed a little with the substituents of the reactants, which indicates that the reaction has a good adaptability to reactants containing different substituents. It was found the proton transfer in the final tautomerism step of nitroso intermediate to oxime is the rate limiting step under anhydrous conditions. Although the solvent effect did not influence the the rate limiting step significantly, the water mediated proton transfer significantly decreased the energy barrier of final tautomerism step. Compared with the direct proton transfer in vacuum, the energy barrier of the final tautomerism step decreased from 57.80kcal/mol in vacuum to 12.98kcal/mol with the water mediated proton transfer in water, which declined by 77.5%. When water participates in rate-limiting steps in organic solvents, the energy barrier also decreases significantly, which indicates that a small amount of water in the organic solvent is conducive to the reaction. This study is of great significance for the application of bifunctionalized reaction in the synthesis of organic fluoride compounds with different substituents.

Download Full-text

Kinetics and Mechanism of the Oxidation of Some Thioacids by Butyltriphenylphosphonium Dichromate

Progress in Reaction Kinetics and Mechanism ◽

10.3184/146867807x228236 ◽

2007 ◽

Vol 32 (3) ◽

pp. 119-129 ◽

Cited By ~ 3

Author(s):

K.M. Dilsha ◽

Seema Kothari

Keyword(s):

Solvent Effect ◽

Organic Solvents ◽

Second Order ◽

Kinetics And Mechanism ◽

Slow Step ◽

Hydrogen Ions ◽

First Order

The oxidation of thioglycollic, thiolactic and thiomalic acids by butyltriphenylphosphonium dichromate (BTPPD) in dimethylsulfoxide (DMSO) yielded the corresponding disulfide as the product. The reaction is first order with respect to BTPPD, however, second-order dependences of the rate were found on the concentrations of both the thioacid and hydrogen ions. The rate of oxidation of thiolactic acid (TLA) was determined in nineteen organic solvents. An analysis of the solvent effect by multiparametric equations indicated the cation-solvating power of the solvents to be most significant. A mechanism has been proposed involving the formation of a thioester in a pre-equilibrium, followed by its decomposition in the slow step.

Download Full-text