Basf Se Corporation

Aviel Anaby

Rocco Paciello

Thomas Schaub

Mathias Schelwies

A Stephen K Hashmi

Jonas Schwaben

The present invention relates to the use of a transition metal catalyst TMC1, which comprises a transition metal M selected from metals of groups 7, 8, 9 and 10 of the periodic table of elements according to IUPAC and a tetradentate ligand of formula I wherein Rare identical or different and are each an organic radical having from 1 to 40 carbon atoms, and Rare identical or different and are each an organic radical having from 1 to 40 carbon atoms, as catalyst in processes for formation of compounds comprising at least one carboxylic acid ester functional group &#x2014;O&#x2014;C(&#x2550;O)&#x2014; starting from at least one primary alcohol and/or hydrogenation of compounds comprising at least one carboxylic acid ester functional group &#x2014;O&#x2014;C(&#x2550;O)&#x2014;. The present invention further relates to a process for hydrogenation of a compound comprising at least one carboxylic acid ester functional group &#x2014;O&#x2014;C(&#x2550;O)&#x2014;, to a process for the formation of a compound comprising at least one carboxylic acid ester functional group &#x2014;O&#x2014;C(&#x2550;O)&#x2014; by dehydrogenase coupling of at least one primary alcohol with a second alcoholic OH-group, to a transition metal complex comprising the tetradentate ligand of formula I and to a process for preparing said transition metal complex. 

Use of a transition metal catalyst comprising a tetradentate ligand for hydrogenation of esters and/or formation of esters, a process for hydrogenation of esters, a process for formation of esters and a transition metal complex comprising said tetradentate ligand

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Schwaebisch Hall, Germany

Aviel Anaby