Phosphine ligand and palladium catalysts based thereon for the alkoxycarbonylation of ethylenically unsaturated compounds

1. Process comprising the following process steps:

a) initially charging an ethylenically unsaturated compound;

b) adding a compound of formula (1)

 and a compound comprising Pd,

 or adding a complex comprising Pd and the compound of formula (1);

c) adding an alcohol;

d) feeding in CO;

e) heating the reaction mixture, with conversion of the ethylenically unsaturated compound to an ester.

2. The process of claim 1 , wherein the complex is selected from one of the following K1 to K3:

3. Process according to claim 1 ,

wherein the ethylenically unsaturated compound is selected from ethene, propene, 1-butene, cis- and/or trans-2-butene, isobutene, 1,3-butadiene, 1-pentene, cis- and/or trans-2-pentene, 2-methyl-1-butene, 3-methyl-1-butene, 2-methyl-2-butene, hexene, tetramethylethylene, heptene, 1-octene, 2-octene, di-n-butene, or mixtures thereof.

4. Process according to claim 1 ,

wherein the ethylenically unsaturated compound comprises 8 to 22 carbon atoms.

5. Process according to claim 1 ,

wherein the compound comprising Pd in process step b) is selected from palladium dichloride, palladium(II) acetylacetonate, palladium(II) acetate, dichloro(1,5-cyclooctadiene)palladium(II), bis(dibenzylideneacetone)palladium, bis(acetonitrile)dichloropailadium(II), palladium(cinnamyl) dichloride.

6. Process according to claim 1 ,

wherein the alcohol in process step c) is selected from methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, 2-propanol, tert-butanol, 3-pentanol, cyclohexanol, phenol, or mixtures thereof.

7. A process for catalysis of an alkoxycarbonylation reaction, comprising: introducing a compound of formula (1)

 or a complex comprising Pd and the compound of formula (1).