TEMPERATURE CONTROLLED SELECTIVITY IN METHYLCYCLOPENTANE CARBONYLATION IN HF-SbF5
Protolytic ionization of methylcyclopentane in HF-SbF5, followed by carbonylation at atmospheric pressure yields either methyl cyclopentane- or cyclohexaneoxocarbenium ions depending on the reaction temperature.An example of kinetic versus thermodynamic control.
Culmann, Jean-Christophe,Cherry, Ghassan,Jost, Roland,Sommer, Jean
p. 701 - 704
(2007/10/02)
ETHOXYCARBONYLATION OF CYCLOHEXANOL BY ETHYL FORMATE UNDER CONDITIONS OF CATALYSIS BY SULFURIC ACID
The catalytic ethoxycarbonylation of cyclohexanol by ethyl formate in the presence of concentrated sulfuric acid at 25-55 deg C and atmospheric pressure was investigated.The products are cyclohexanecarboxylic and 1-methyl-1-cyclopentanecarboxylic acid and their ethyl esters.A reaction mechanism is proposed.
Ordyan, M. B.,Stepanyan, A. A.,Pirozhkov, S. D.,Manukyan, Sh. M.,Grigoryan, V. S.,Lapidus, A. L.
p. 2290 - 2292
(2007/10/02)
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