Catalyzed Thermal Decomposition of Organic Acids: Part 2.—Catalyzed Decomposition of Cyclopentane- and Cycloheptane-carboxylic Acids by Hydrogen Bromide
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Date
1973
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Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1973, 69 (1)
Abstract
Cyclopcntanc- and cycloheptane-carboxylic acids decompose by a molecular mechanism into carbon monoxide, water and the corresponding alkene on catalysis by HBr in a seasoned Pyrex vessel. The decomposition is homogeneous and first order in acid and catalyst, HBr. The second order rate constants, expressed by the Arrhenius equations are:
k2 = 1012.17e-29 550/RTcm3mol-1 s-1
for cycloheptanecarboxylic acid and
k2 = 1013.49e-34 590/RTcm3mol-1 S-1
for cyclopentanecarboxylic acid over the temperature range 369.0-434.0°C (R in cal mol"1).
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Chemistry, Thermal Decomposition, Organic Acids, Journal of the Chemical Society : Faraday Transaction - I