THE THERMAL CIS–TRANS ISOMERIZATION AND DECOMPOSITION OF METHYL CROTONATE
1963; NRC Research Press; Volume: 41; Issue: 10 Linguagem: Inglês
10.1139/v63-368
ISSN1480-3291
AutoresJames N. Butler, Gerald J. Small,
Tópico(s)Advanced Chemical Physics Studies
ResumoMethyl crotonate undergoes a homogeneous, unimolecular cis–trans isomerization in the gas phase at temperatures from 400 °C to 560 °C. The rate constant for the cis → trans reaction was found to be [Formula: see text]independent of pressure in the range from 0.1 mm to 10 mm. The equilibrium trans/cis ratio is approximately 4.5, independent of temperature, from 200 °C to 500 °C. Simultaneous free-radical reactions also occur, the most important of which are the isomerization to methyl vinylacetate, and the decomposition to give carbon dioxide and the various butene isomers. Side reactions gave carbon monoxide, methane, propylene, numerous other hydrocarbons, and various ethers.
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