Homogeneous catalytic carbonylation of nitroaromatics Part III. Discovery and in situ high pressure FTIR spectral studies of a novel binuclear ruthenium catalyst

Jerry D. Gargulak, Richard D. Hoffman, Wayne L. Gladfelter

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14 Scopus citations

Abstract

The binuclear ruthenium complex, Ru2(dmpm)2(CO)5, where dmpm=1,2-bis-(dimethylphosphino)methane, was found to catalyze the carbonylation of nitroaromatics in the presence of methanol to give N-arylmethylcarbamates in yields ranging from 47 to 60%. In situ FTIR spectral studies established that an equilibrium mixture of Ru2(dmpm)2(CO)5 and [(μ-H)Ru2(dmpm)2(CO)5]+ were present following initial mixing under CO (61 atm). Upon heating to 145 °C a new, as yet unidentified, species was observed. When the nitroaromatic was consumed, the spectrum indicated that the starting complex was reformed.

Original languageEnglish (US)
Pages (from-to)289-293
Number of pages5
JournalJournal of Molecular Catalysis
Volume68
Issue number3
DOIs
StatePublished - Sep 15 1991

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