PROCESS FOR THE ALKOXYCARBONYLATION OF OLEFINS IN A MEDIUM HAVING A LOW BRØNSTED ACID CONCENTRATION
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United States of America Patent
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app pub date -
Jul 17, 2017
filing date -
Jul 19, 2016
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Abstract
Process comprising the following process steps:
- a) introducing an ethylenically unsaturated compound;b) adding a ligand-metal complex comprising Pd and a bidentate phosphine ligand, or adding a bidentate phosphine ligand and a compound which comprises Pd;c) adding an alcohol;d) supplying CO;e) heating the reaction mixture, the ethylenically unsaturated compound being reacted to form an ester,where the reaction mixture is admixed with less than 0.1 mol %, based on the amount of substance of the ethylenically unsaturated compound, of Brønsted acids having an acid strength of pKa ≦3,characterized in that the phosphine ligand is substituted on at least one phosphorus atom by at least one heteroaryl radical.
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- 4 Citation Count
- C07C Class
- 49.72 % this patent is cited more than
- 7 Age