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Kinetics of the Diels–Alder addition of acrolein to cyclohexa-1,3-diene and its reverse reaction in the gas phase

✍ Scribed by G. Huybrechts; G. Paternoster; P. Baetens

Publisher
John Wiley and Sons
Year
1976
Tongue
English
Weight
360 KB
Volume
8
Category
Article
ISSN
0538-8066

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✦ Synopsis

Abstract

The Diels–Alder addition of acrolein to cyclohexa‐1,3‐diene has been studied between 486 and 571°K at pressures ranging from 55 to 240 torr. The products are endo‐ and exo‐5‐formylbicyclo[2.2.2]oct‐2‐ene (endo‐ and exo‐FBO), and their formations are second order. The rate constants (in l./mole · sec) are given by

The retro‐Diels–Alder pyrolysis of endo‐FBO has also been studied. In the ranges of 565–638°K and 6–38 torr, the reaction is first order, and its rate constant (in sec^−1^) is given by

The reaction mechanism is discussed. The heat of formation and the entropy of endo‐FBO are estimated.

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