The invention relates to a process for preparing carboxylic acids or salts thereof by hydrolysis or saponification of an ester, which is obtained by alkoxycarbonylation of a C2 to C20 hydrocarbon having at least one multiple bond, preferably having at least one olefinic double bond, in which the homogeneous catalyst system used is separated from the product mixture by means of membrane separation. In a development of the present invention, the ester thus formed is converted into another ester by transesterification and then hydrolyzed or saponified.

The invention relates to a process for preparing carboxylic acids or salts thereof by hydrolysis or saponification of an ester, which is obtained by alkoxycarbonylation of a C2 to C20 hydrocarbon having at least one multiple bond, preferably having at least one olefinic double bond, in which the homogeneous catalyst system used is separated from the product mixture by means of membrane separation. In a development of the present invention, the ester thus formed is converted into another ester by transesterification and then hydrolyzed or saponified.

Catalytic hydroesterification of alkyl lactates give alkyl 2-(propionyloxy)propanoates, starting from alkyl lactate, carbon monoxide, ethylene gas, and a palladium catalyst. Pyrolysis of alkyl 2-(propionyloxy)propanoates gives acrylate esters.

Catalytic hydroesterification of alkyl lactates give alkyl 2-(propionyloxy)propanoates, starting from alkyl lactate, carbon monoxide, ethylene gas, and a palladium catalyst. Pyrolysis of alkyl 2-(propionyloxy)propanoates gives acrylate esters.

Propyl-bridged diphosphine compounds, metal complexes of these compounds and the use thereof for alkoxycarbonylation.

Propyl-bridged diphosphine compounds, metal complexes of these compounds and the use thereof for alkoxycarbonylation.

Propyl-bridged diphosphine compounds, metal complexes of these compounds and the use thereof for alkoxycarbonylation.

Linear , -nonadecanediester derivatives and methods of making the derivatives are described. The methods include reacting a linear , -nonadecanediester or a linear , -nonadecanedicarboxylic acid with a reactant optionally in the presence of at least one of a solvent and a catalyst to form the , -nonadecanediester derivative. Methods of making linear , -nonadecanediester or diester derivatives are also described.

Linear , -nonadecanediester derivatives and methods of making the derivatives are described. The methods include reacting a linear , -nonadecanediester or a linear , -nonadecanedicarboxylic acid with a reactant optionally in the presence of at least one of a solvent and a catalyst to form the , -nonadecanediester derivative. Methods of making linear , -nonadecanediester or diester derivatives are also described.

Linear , -nonadecanediester derivatives and methods of making the derivatives are described. The methods include reacting a linear , -nonadecanediester or a linear , -nonadecanedicarboxylic acid with a reactant optionally in the presence of at least one of a solvent and a catalyst to form the , -nonadecanediester derivative. Methods of making linear , -nonadecanediester or diester derivatives are also described.