Regioselective Reduction of Quinolines Catalyzed by Rhodium and Iridium Complexes with mono-, di-, and tri-dentated Phosphine Ligands

Autor:	Regina Vallejo, Angel González, Merlin Rosales, Juan José Soto, Gustavo Chacón, Beatriz González
Rok vydání:	2006
Předmět:	Stereochemistry Quinoline General Chemistry Medicinal chemistry Catalysis Triphos chemistry.chemical_compound chemistry Cyclooctene Acridine Triphenylphosphine Isoquinoline Phosphine Organometallic chemistry
Zdroj:	Catalysis Letters. 106:101-105
ISSN:	1572-879X 1011-372X
DOI:	10.1007/s10562-005-9614-4
Popis:	The systems prepared in situ by addition of the corresponding equivalents of the respective phosphine (mono-, di- and tri-dentated), called M2Cl2(COE)4/n phosphine (M = Rh, Ir; and COE = cyclooctene), are efficient and regioselective precatalysts for the hydrogenation of quinoline, isoquinoline, 5,6- and 7,8-benzoquinoline and acridine. The Rh systems were more active than the corresponding Ir ones, being the systems with 1,1,1-tris(diphenylphosphinomethyl)ethane (triphos) more active than those with 1,2-bis(diphenylphosphino)ethane (dppe), except for the case of acridine, where the inversed tendencies were observed (Ir > Rh and dppe > triphos). The systems with triphenylphosphine showed the lowest activities.
Databáze:	OpenAIRE
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