4926-76-5Relevant academic research and scientific papers
Organolanthanide catalyzed hydrogenation and hydrosilylation of substituted methylenecycloalkanes
Molander, Gary A.,Winterfeld, Joern
, p. 275 - 279 (1996)
This communication presents a study of the scope of the catalytic hydrogenation and hydrosilylation of chiral exomethylene-substituted cyclopentanes and cyclohexanes utilizing the organolanthanide precatalysts Cp2* LnCH(SiMe3)2 (Cp* = C5Me5; Ln = Sm, Yb). Both reaction types are sterically driven and lead to the cis-diastereomer as the major product. Additionally, the hydrosilylation is regiospecific, the silane being placed exclusively at the terminal position of the double bond.
CATALYTIC ACTIVITY OF Pt/AlPO4 AND RELATED SYSTEMS. II. GAS PHASE HYDROGENATION OF XYLENES
Aramendia, M. A.,Borau, V.,Jimenez, C.,Marinas, J. M.
, p. 743 - 750 (2007/10/02)
In the present paper data are reported on the gas-phase hydrogenation of o-, m-, and p-xylene and o-, m-, p-ethylmethylbenzene using a pulse reactor.New systems obtained by supporting Pt on AlPO4-Al2O3 (75/25), pure AlPO4 and SiO4-AlPO4 (80/20) have been used as catalysts.The effect of the reduction temperature of the catalysts and the hydrogen pressure on the selectivity to cis- and trans-dimethylcyclohexanes and ethylmethylcyclohexanes has been investigated.The result obtained are interpreted by assuming a Horiuti-Polanyi mechanism, with suprafacial addition of hydrogen.
