Chiral Tetraaryl- and Tetraalkynylborates as Chiral Solvating Agents for Tetraalkylammonium Salts

2019 ◽  
Vol 2019 (4) ◽  
pp. 803-811 ◽  
Author(s):  
Eiji Tayama ◽  
Takeshi Sugawara
Keyword(s):  
Tetraalkylammonium Salts

Effects of salts on the kinetics of oxidation of alkenes by thallic salts in aqueous solutions

1981 ◽  
Vol 46 (3) ◽  
pp. 693-700 ◽  
Author(s):  
Milan Strašák ◽  
Jaroslav Majer
Keyword(s):  
Aqueous Solutions ◽  
Phase Transfer ◽  
Heterogeneous Reaction ◽  
Qualitative Model ◽  
Kinetic Effect ◽  
Tetraalkylammonium Salts ◽  
Reaction Conditions ◽  
Kinetics Of Oxidation ◽  
Kinetics Of ◽  
Heterogeneous Reaction Conditions

The kinetics of oxidation of alkenes by thallic sulphate in aqueous solutions, involving the two reaction steps-the hydroxythallation and the dethallation - was studied, and the effect of salts on the kinetics was examined; this made it possible to specify more precisely the reaction mechanism and to suggest a qualitative model of the reaction coordinate. It was found that in homogeneous as well as in heterogeneous reaction conditions, the reaction can be accelerated appreciably by adding tetraalkylammonium salts. These salts not only operate as catalysts of the phase transfer, but also exert a significant kinetic effect, which can be explained with a simplification in terms of a stabilization of the transition state of the reaction.

Regioselective Coupling of Tetraalkylammonium Salts of 6-Iodo-2-aminopurine to a Cyclobutyl Triflate: Efficient Preparation of Homochiral BMS-180,194, a Potent Antiviral Carbocyclic Nucleoside

1995 ◽  
Vol 60 (9) ◽  
pp. 2902-2905 ◽  
Author(s):  
Gregory S. Bisacchi ◽  
Janak Singh ◽  
Jollie D. Godfrey ◽  
Thomas P. Kissick ◽  
Toomas Mitt ◽  
...  
Keyword(s):  
Tetraalkylammonium Salts ◽  
Carbocyclic Nucleoside

Solvent Effects on Ion-Pair Distribution and Dimerization of Tetraalkylammonium Salts

2001 ◽  
Vol 132 (11) ◽  
pp. 1439-1450 ◽  
Author(s):  
Kiyoshi Sawada ◽  
Eiji Takahashi ◽  
Tomokazu Horie ◽  
Keiichi Satoh
Keyword(s):  
Solvent Effects ◽  
Ion Pair ◽  
Tetraalkylammonium Salts
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