Oxidative cyclizations. IV. Isokinetic relationship in the oxidation of orthosubstituted anilines with (diacetoxyiodo)benzene

1973 ◽  
Vol 26 (12) ◽  
pp. 2665 ◽  
Author(s):  
LK Dyall
Keyword(s):  
Acetic Acid ◽  
Reaction Mechanism ◽  
Acid Solution ◽  
Acetic Acid Solution ◽  
Activation Parameters ◽  
Oxidative Cyclization ◽  
Substituted Anilines ◽  
Isokinetic Relationship ◽  
Oxidative Cyclizations

The rates of oxidative cyclization of 11 ortho-substituted anilines by (diacetoxyiodo)benzene have been measured in toluene-acetic acid solution. The activation parameters give a precise fit to an isokinetic relationship, which indicates that a common reaction mechanism is followed. This mechanism applies to amines from the benzene, naphthalene, and anthraquinone families, with nitro and various carbonyl and arylazo groups as the ortho substituents.

scholarly journals Meso-tetraphenylporphyriniron(iii) chloride catalyzed oxidation of aniline and its substituents by magnesium monoperoxyphthalate in aqueous acetic acid medium

2012 ◽  
Vol 14 (4) ◽  
pp. 35-41 ◽  
Author(s):  
Raja Manickam ◽  
Karunakaran Kulandaivelu
Keyword(s):  
Acetic Acid ◽  
Acid Medium ◽  
First Generation ◽  
Activation Parameters ◽  
Aqueous Acetic Acid ◽  
Substituted Anilines ◽  
Isokinetic Relationship ◽  
Acetic Acid Medium ◽  
Linear Free Energy ◽  
Energy Relationships

Abstract The catalytic properties of the first generation catalyst meso-tetraphenylporphyriniron(III) chloride and magnesium monoperoxyphthalate (MMPP) as oxidant have been studied in the oxidation of aniline and its substituents in acetic acid medium. The thermodynamic parameters for the oxidation have been determined and discussed. It confirms the Exner relationship (only at the low range of temperatures) and also some of the activation parameters to the isokinetic relationships. The magnesium monoperoxyphthalate oxidation with 18 ortho- meta- and para-substituted anilines fulfills with isokinetic relationship but not to any of the linear free energy relationships. The reaction mechanism and the rate law were proposed.

Oxidative cyclizations. III. Kinetic studies of the oxidation of 2,4-dinitroaniline and 2-benzoylaniline with (diacetoxyiodo)benzene

1973 ◽  
Vol 26 (9) ◽  
pp. 1969 ◽  
Author(s):  
LK Dyall ◽  
JE Kemp
Keyword(s):  
Acetic Acid ◽  
Equilibrium Constants ◽  
Kinetic Studies ◽  
Reaction Rates ◽  
Oxidative Cyclization ◽  
Toluene Solution ◽  
Common Mechanism ◽  
Substituted Anilines ◽  
Oxidative Cyclizations ◽  
Cyclic Product

For the oxidative cyclization of 2,4-dinitroaniline and 2- benzoylaniline with (diacetoxyiodo)benzene in toluene solution, the kinetic orders are unity in amine and oxidant, zero in iodobenzene and cyclic product, and -1 in monomeric acetic acid. These characteristic orders are also those observed for 2-nitroaniline and, together with evidence for a specific solvation effect by acetic acid on the reaction rates of all three amines, indicate that a common mechanism of oxidative cyclization applies to a range of ortho-substituted anilines. For 2-benzoylaniline, there is infrared evidence of an N-H bond in an iodoso intermediate. ��� Equilibrium constants for the monomer ↔ dimer equilibrium of acetic acid in toluene solution have been determined at four temperatures between 25� and 46�.

Some Approaches to Viscometric Study of Chitosan in Acetic Acid Solution

2016 ◽  
Vol 10 (2) ◽  
pp. 135-139 ◽  
Author(s):  
Valentina Chernova ◽  
◽  
Angela Shurshina ◽  
Elena Kulish ◽  
Gennady Zaikov ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Acid Solution ◽  
Intrinsic Viscosity ◽  
Acetic Acid Solution ◽  
Conformational State ◽  
Macromolecular Coil ◽  
Degree Of Swelling ◽  
Current Value ◽  
Viscometric Study

Some ways of estimating the values of the intrinsic viscosity of chitosan were analyzed. It was shown that the method of Irzhak and Baranov for estimating the current value of the intrinsic viscosity allows to adequately estimates the conformational state of the macromolecular coil and its degree of swelling.

Compatibility studies of chitosan/PVA blend in 2% aqueous acetic acid solution at 30°C

2010 ◽  
Vol 82 (2) ◽  
pp. 251-255 ◽  
Author(s):  
H.M.P. Naveen Kumar ◽  
M.N. Prabhakar ◽  
C. Venkata Prasad ◽  
K. Madhusudhan Rao ◽  
T.V. Ashok Kumar Reddy ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Acid Solution ◽  
Acetic Acid Solution ◽  
Aqueous Acetic Acid ◽  
Compatibility Studies ◽  
Aqueous Acetic Acid Solution

The Action of Platinum on Cholesterol in Acetic Acid Solution

1944 ◽  
Vol 66 (10) ◽  
pp. 1752-1755 ◽  
Author(s):  
Herbert S. Anker ◽  
Konrad Bloch
Keyword(s):  
Acetic Acid ◽  
Acid Solution ◽  
Acetic Acid Solution
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