Homogeneous catalytic hydrogenation of long-chain esters by an osmium pincer complex and its potential application in the direct conversion of triglycerides into fatty …

A Acosta-Ramirez, M Bertoli, DG Gusev, M Schlaf

Index: Acosta-Ramirez, Alberto; Bertoli, Marcello; Gusev, Dmitry G.; Schlaf, Marcel Green Chemistry, 2012 , vol. 14, # 4 p. 1178 - 1188

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Citation Number: 29

Abstract

The osmium hydride complexes OsH2 (CO)[NH (CH2PiPr2) 2](1) and OsHCl (CO)[NH (CH2PiPr2) 2](2) were evaluated in the catalytic hydrogenation of hexyl octanoate and cis-3- hexenyl hexanoate to alcohols as model substrates for triglycerides. Both complexes achieve full conversion of the saturated ester at 220° C and 800 psi pressure of hydrogen gas. In the presence of unsaturated substrates, the complexes hydrogenate CC bonds, but ...