Heterogeneous hydrogenation of substituted phenols over Al2O3 supported ruthenium

Autor:	H. Norouzi-Arasi, Michael Schmitt, Arlette Solladié-Cavallo, François Garin, E. Choucair, A. Baram
Rok vydání:	2007
Předmět:	chemistry.chemical_classification Ketone Process Chemistry and Technology chemistry.chemical_element Catalysis Ruthenium chemistry.chemical_compound chemistry Group (periodic table) Organic chemistry Phenols Physical and Theoretical Chemistry Cis–trans isomerism Alkyl
Zdroj:	Journal of Molecular Catalysis A: Chemical. 273:92-98
ISSN:	1381-1169
Popis:	It is shown that catalytic heterogeneous hydrogenation over Ru/Al2O3 of mono- and di-substituted phenols (1–4) works and provides mixtures of the two or four possible isomers. Although cis and all-cis isomers (corresponding to all-syn H2 additions) are less stable, they are always major. It is also observed that large alkyl substituents and carbomethoxy groups have a tendency to increase the diastereoselectivity and that formation of larger amounts of the trans isomers is related to the presence of an OH group thus supporting intermediate formation of the corresponding ketone as already suggested.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bb925b0b8d06a5986df0e28341c9f285 https://doi.org/10.1016/j.molcata.2007.03.001 Zobrazit plný text záznamu Full Text from ScienceDirect