The effect of the components of the PdCl2/Fe/I2/Py catalytic system on nitrobenzene carbonylation to ethyl N-phenylcarbamate

• Authors: Jadwiga Skupińska , Monika Karpińska , Maria Ołówek , Teresa Kasprzycka-Guttman
• Languages of publication: EN

Abstracts

EN

The PdCl2/Fe/I2/Py catalytic system (Py-pyridine), reported to be highly active in the reaction of nitrobenzene carbonylation to ethyl phenylcarbamate was studied. The present paper describes the role of catalyst components and its effect on the activity and selectivity of the catalyst. The increase in the amount of PdCl2 in the system while retaining a constant level of the other catalyst components, results in the increase of both carbamate and aniline yields. The increase in the amount of iron while retaining the other components constant, initially causes an increase in the carbamate yield; however, at Fe: Pd ratios higher than 36, the carbamate yield remains constant. The change in the amount of iron has no effect on the amount of aniline formed in the system. An increase in the amount of iodine in the system while retaining the other components constant, results in a decrease in carbamate yield and a considerable increase in the aniline yield of the reaction products.

Keywords

EN

nitrobenzene carbonylation; palladium catalysts; urethanes

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2005
• Volume: 3
• Issue: 1
• Pages: 28-39

Dates

published

1 - 3 - 2005

online

1 - 3 - 2005

Contributors

author

Jadwiga Skupińska

• Laboratory of Physicochemical Fundaments of Chemical Technology, Department of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland

author

Monika Karpińska

• Laboratory of Physicochemical Fundaments of Chemical Technology, Department of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland

author

Maria Ołówek

• Laboratory of Physicochemical Fundaments of Chemical Technology, Department of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland

author

Teresa Kasprzycka-Guttman

• Laboratory of Physicochemical Fundaments of Chemical Technology, Department of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland

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Identifiers

DOI

10.2478/BF02476235