13151-55-8Relevant articles and documents
Thermal C-H Activation Catalyzed by RhCl(CH2=CH2)(PMe3)2. Hydrogen Transfer from Cycloalkanes to Ethylene and Ethylene Insertion into Cycloalkanes
Sakakura, Toshiyasu,Tanaka, Masato
, p. 359 - 362 (2007/10/02)
Dehydrogenation of cycloalkanes to cycloalkenes is catalyzed by RhCl(CH2=CH2)(PMe3)2 under ethylene pressure at a high temperature over 170 deg C.Ethylene insertion into sp3 C-H bond of cycloalkanes occurs at 230 deg C to afford ethylcycloalkanes.
SYNTHESIS AND THERMAL TRANSFORMATIONS OF BICYCLOALKENES CONTAINING A METHYLENECYCLOPROPANE FRAGMENT
Mil'vitskaya, E. M.,Pekhk, T. I.,Pereslegina, N. S.,Tarakanova, A. V.,Ivanov, A. V.
, p. 1573 - 1583 (2007/10/02)
The previously undescribed 8-methylenebicyclooct-2-ene (II) and 9-methylenebicyclonon-4-ene (IV) were synthesized by the dehydrohalogenation of 8-methyl-8-chlorobicyclooct-2-ene and 9-methyl-9-chlorobicyclonon-4-ene.It was established that the hydrocarbon (II) is thermally labile, whereas the hydrocarbon (IV) does not change right up to 300 deg C.The thermal transformations of the hydrocarbon (II) and its isomeric bicyclonona-1,6-diene (III) at 100 - 180 deg C were investigated.At 100 deg C a pseudoequilibrium is established between these hydrocarbons.The final and only products from the transformations of both hydrocarbons at 180 deg C are the previously unknown anti-Bredt hydrocarbon bicyclonona-2,7-diene (XXVIIIb) and 3-methylene-1,4-cyclooctadiene (XXV), formed in a ratio of 1 : 2.5.
Hydrogenolysis of Small Cycloalkanes, X. - Catalytic Hydrogenation of Bicycloalkanes
Stahl, Karl-Johannes,Hertzsch, Winfried,Musso, Hans
, p. 1474 - 1484 (2007/10/02)
Dependent on n different products are obtained from bicycloalkanes by hydrogenation on Pt and Pd/C catalysts: from n = 5 onward only methylcycloalkanes of the same ring size; with n = 4 additionally 2-7 percent of cycloheptane is formed; with n = 3 ring enlargement increases to 5-20 percent and with n = 2 cyclopentane is the only product.Mainly butane is formed from bicyclobutane and no intermediate could be detected.Explanations are attempted.The expected products are produced on hydrogenation of methyl-substituted derivatives and spiroalkanes.