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Aqueous biphasic hydrogenations catalyzed by rhodium and iridium complexes modified with human serum albumin

Marchetti, Mauro and Minello, Fabiola and Paganelli, Stefano and Piccolo, Oreste (2010) Aqueous biphasic hydrogenations catalyzed by rhodium and iridium complexes modified with human serum albumin. Applied Catalysis A: General, Vol. 373 (1-2), p. 76-80. ISSN 0926-860X. Article.

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DOI: 10.1016/j.apcata.2009.10.042

Abstract

Water soluble complexes derived from the interaction between Rh(CO)2(acac) and [Ir(COD)Cl]2, respectively, with human serum albumin (HSA), were employed in the aqueous biphasic hydrogenation of α,β-unsaturated compounds as 2-cyclohexen-1-one (I), 2-butenal (V), 3-phenyl-2-propenal (IX) and 3-aryl-2-methyl-2-propenals (XIIIand XVII).
Both catalytic systems Rh/HSA and Ir/HSA showed to be very active in the hydrogenation of ketone I even at low temperature and hydrogen pressure; in particular, the rhodium based catalyst showed to be very selective affording exclusively cyclohexanone (II). The α,β-unsaturated aldehydes investigated required higher temperature (up to 60 °C) and pressure (5 MPa) to obtain good conversions. In this case Rh/HSA resulted to be more active than Ir based catalyst. In all cases both Rh/HSA and Ir/HSA were easily recycled without significant loss of activity.

Item Type:Article
ID Code:5710
Status:Published
Refereed:Yes
Uncontrolled Keywords:Hydrogenation, biphasic catalysis, rhodium catalyst, iridium catalyst, human serum albumin
Subjects:Area 03 - Scienze chimiche > CHIM/06 Chimica organica
Divisions:002 Altri enti e centri di ricerca del Nord Sardegna > CNR-Consiglio Nazionale delle Ricerche > Istituto di chimica biomolecolare, Sassari
Publisher:Elsevier
ISSN:0926-860X
Copyright Holders:© 2009 Elsevier
Deposited On:04 Mar 2011 11:42

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