Gas-phase eliminations. Part X. Kinetics of the thermal decomposition of 3-chlorobutan-2-one, 3-chloropentan-2-one, and 4-chloropentan-2-one
- 1 January 1969
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society B: Physical Organic
- p. 1248-1250
- https://doi.org/10.1039/j29690001248
Abstract
The thermal decompositions in ‘seasoned’ reaction vessels of 3-chlorobutan-2-one and 3-chloropentan-2-one in the range 390–440° and of 4-chloropentane-2-one in the range 335–390° are homogeneous, first order, and unimolecular with rate constants k1= 5·49 × 1011 exp (–49,050/RT) sec.–1, 6·31 × 1012 exp (–50,800/RT) sec.–1, and 1·66 × 1012exp (–44,500) sec.–1 respectively. The effect of the acetyl group in the α-position reduces the rate of elimination while in the β-position it slightly increases it.Keywords
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