Oxidations by the reagent “O2–H2O2–vanadium derivative–pyrazine-2-carboxylic acid”. Part 13.For parts 1–12 see refs. 4(a)–(l), respectively. Kinetics and mechanism of the benzene hydroxylation

2003 ◽  
Vol 27 (3) ◽  
pp. 634-638 ◽  
Author(s):  
Marcus H. C. de la Cruz ◽  
Yuriy N. Kozlov ◽  
Elizabeth R. Lachter ◽  
Georgiy B. Shul'pin
Keyword(s):  
Carboxylic Acid ◽  
Kinetics And Mechanism ◽  
Benzene Hydroxylation

scholarly journals Kinetics and Mechanism of Oxidation of Aliphatic Aldehydes by Benzyltrimethylammonium tribromide

1999 ◽  
Vol 23 (3) ◽  
pp. 176-177
Author(s):  
Garima Goswami ◽  
Seema Kothari ◽  
Kalyan K. Banerji
Keyword(s):  
Carboxylic Acid ◽  
Kinetics And Mechanism ◽  
Intermediate Complex ◽  
Aliphatic Aldehydes ◽  
Rate Determining Step ◽  
Mechanism Of Oxidation ◽  
Subsequent Decomposition

The oxidation of aliphatic aldehydes by benzyltrimethylammonium tribromide involves the formation of an intermediate complex and its subsequent decomposition in the rate-determining step to the corresponding carboxylic acid.

Kinetics and Mechanism of the Oxidation of Aliphatic Aldehydes by Benzyltrimethylammonium Chlorobromate

1999 ◽  
Vol 23 (5) ◽  
pp. 308-309
Author(s):  
Anupama Bohra ◽  
Pradeep K. Sharma ◽  
Kalyan K. Banerji
Keyword(s):  
Carboxylic Acid ◽  
Kinetics And Mechanism ◽  
Aliphatic Aldehydes ◽  
Acid Proceeds ◽  
Hydride Ion

Oxidation of aliphatic aldehydes by benzyltrimethylammonium chlorobromate to the corresponding carboxylic acid proceeds via the transfer of a hydride ion from the aldehyde hydrate to the oxidant.

Kinetics and mechanism of the decarboxylation of pyrimidine-2-carboxylic acid in aqueous solution

1977 ◽  
Vol 55 (13) ◽  
pp. 2478-2481 ◽  
Author(s):  
Gerald E. Dunn ◽  
Edward A. Lawler ◽  
A. Brian Yamashita
Keyword(s):  
Carbon Dioxide ◽  
Aqueous Solution ◽  
Carboxylic Acid ◽  
Rate Constants ◽  
Kinetics And Mechanism ◽  
First Order ◽  
Order Rate ◽  
Pseudo First Order ◽  
Positively Charged

Pseudo-first-order rate constants for the decarboxylation of pyrimidine-2-carboxylic acid have been determined at 65 °C in aqueous solution over the acidity range pH = 2 to H0 = −9.5. Rate constants increase rapidly from pH = 2 to H0 = −3, then remain constant. This behaviour can be accounted for by a Hammick-type mechanism in which monoprotonated pyrimidine-2-carboxylic acid loses carbon dioxide to form an ylide (stabilized by the adjacent positively charged nitrogens) which rapidly converts to pyrimidine.

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