Alkaline Hydrolysis of 4-Nitrophenyl Acetate and Diphenyl (4-Nitrophenyl) Phosphate Catalyzed by Iodosoarenesulfonic Acids

1994 ◽  
Vol 59 (6) ◽  
pp. 1392-1399 ◽  
Author(s):  
Jiří Kulič ◽  
Aleš Ptáček
Keyword(s):  
Alkaline Hydrolysis ◽  
Phenyl Acetate ◽  
Hexadecyltrimethylammonium Bromide ◽  
Nitrophenyl Phosphate ◽  
Hydrolysis Of

Alkaline hydrolysis of 4-nitrophenyl acetate and of diphenyl (4-nitrophenyl) phosphate catalyzed by 2-iodosobenzenesulfonic and 2-iodoso-1-naphthalenesulfonic acids was studied in the presence of hexadecyltrimethylammonium bromide as the micellar agent. It was found that 2-iodosobenzenesulfonic acid is the better catalyst for the hydrolysis of phenyl acetate while 2-iodoso-1-naphthalenesulfonic acid is more efficient for the hydrolysis of the phosphate.

Effect of OH- Concentration on Alkaline Hydrolysis of Diphenyl (4-Nitrophenyl) Phosphate Catalyzed by 2-Iodosobenzoic and 3-Iodoso-2-naphthoic Acids

1994 ◽  
Vol 59 (5) ◽  
pp. 1137-1144 ◽  
Author(s):  
Aleš Ptáček ◽  
Jiří Kulič
Keyword(s):  
Alkaline Hydrolysis ◽  
Reaction Rate ◽  
Ion Concentration ◽  
Molar Ratio ◽  
Hexadecyltrimethylammonium Bromide ◽  
Ph Values ◽  
Nitrophenyl Phosphate ◽  
Naphthoic Acid ◽  
Iodosobenzoic Acid ◽  
Hydrolysis Of

The hydrolysis of diphenyl (4-nitrophenyl) phosphate catalyzed by 2-iodosobenzoic and 3-iodoso-2-naphthoic acids has been studied at different pH values in the presence of hexadecyltrimethylammonium bromide as a micellar agent. It was found that 3-iodoso-2-naphthoic acid is better catalyst than 2-iodosobenzoic acid. At amounts of the acids higher than stoichiometric, the reaction is independent of pH in the 8.00 to 10.00 region while on using substoichiometric amounts, the reaction rate depends on OH- ion concentration only when the acid to diphenyl (4-nitrophenyl) phosphate molar ratio amounts to 12.5 : 1 for 2-iodosobenzoic acid and 6.25 : 1 for 3-iodoso-2-naphthoic acid.

Alkaline Hydrolysis of Substituted Phenyl Acetates Catalyzed by Quaternary Ammonium Salts

1993 ◽  
Vol 58 (12) ◽  
pp. 2891-2895 ◽  
Author(s):  
Jiří Kulič ◽  
Jiří Sussenbek ◽  
Aleš Ptáček
Keyword(s):  
Ammonium Chloride ◽  
Alkaline Hydrolysis ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Ammonium Bromide ◽  
Hexadecyltrimethylammonium Bromide ◽  
Rate Data ◽  
Hammett Equation ◽  
Efficient Catalyst ◽  
Hydrolysis Of

Alkaline hydrolysis if the phenyl acetates CH3COOC6H4X (X = 4-NO2, 3-NO2, 3-Cl, H, 4-CH3, 3-CH3, and 4-OCH3) in the presence of hexadecyltris(2-hydroxyethyl)ammonium chloride, bis(2-hydroxyethyl)hexadecyl(methyl)ammonium bromide, and hexadecyltrimethylammonium bromide has been studied. Comparison of the rates of the hydrolysis for the above tenzides showed that the most efficient catalyst is the hexadecyltris(2-hydroxyethyl)ammonium chloride. In all cases, the rate data correlated well with structure effects by the Hammett equation.

Ammonolysis, aminolysis and alkaline hydrolysis of phenyl acetate groups of elastomers in latex

1973 ◽  
Vol 15 (3) ◽  
pp. 638-644
Author(s):  
L.M. Kogan ◽  
A.I. Yezrielev ◽  
N.B. Monastyrskaya ◽  
A.V. Lebedev
Keyword(s):  
Alkaline Hydrolysis ◽  
Phenyl Acetate ◽  
Hydrolysis Of

Catalyzed Alkaline Hydrolysis of Substituted Phenyl Acetates

1993 ◽  
Vol 58 (8) ◽  
pp. 1798-1802 ◽  
Author(s):  
Jiří Kulič ◽  
Aleš Ptáček
Keyword(s):  
Alkaline Medium ◽  
Alkaline Hydrolysis ◽  
Rate Constants ◽  
Hexadecyltrimethylammonium Bromide ◽  
Hammett Equation ◽  
First Order ◽  
Order Rate ◽  
Iodosobenzoic Acid ◽  
Hydrolysis Of

2-Iodosobenzoic acid forming strong nucleophile in alkaline medium - 1-oxido-1,2-benziodoxol-3(1H)-one, was used as a catalyst of alkaline hydrolysis of substituted phenyl acetates (4-NO2, 3-NO2, 3-Cl, 4-Br, H, 4-CH3, 3-CH3, 4-OCH3, 3-OCH3) in the presence of hexadecyltrimethylammonium bromide as a micellar agent. It was found that the observed first-order rate constants kobs can be correlated by the Hammett equation: log kobs = (-3.29 ± 0.03) + (1.77 ± 0.001) σ.

Influence of medium on alkaline hydrolysis of succinic acid monomethyl and monopropyl esters

1980 ◽  
Vol 45 (11) ◽  
pp. 2873-2882
Author(s):  
Vladislav Holba ◽  
Ján Benko
Keyword(s):  
Succinic Acid ◽  
Kinetic Parameters ◽  
Alkaline Hydrolysis ◽  
Specific Interactions ◽  
Nonaqueous Media ◽  
The Media ◽  
Kinetics Of ◽  
Hydrolysis Of

The kinetics of alkaline hydrolysis of succinic acid monomethyl and monopropyl esters were studied in mixed aqueous-nonaqueous media at various temperatures and ionic strengths. The results of measurements are discussed in terms of electrostatic and specific interactions between the reactants and other components of the reaction mixture. The kinetic parameters in the media under study are related to the influence of the cosolvent on the solvation sphere of the reactants.

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