High yield carbonylation of halo-hydrocarbons
US4668816A · kind A · utility
3Cited by
1References
17Claims
0Family size
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Inventor
Key dates
| Filing date | Nov 12, 1985 |
| Grant date | May 26, 1987 |
| Priority date | — |
| Expiry date | Nov 12, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
High yields of aromatic, aromatic acetic and olefinic acids, esters, amides and the like are derived from a process wherein a halo-hydrocarbon is carbonylated in the presence of a palladium catalyst, a hindered amine base and phosphine in excess. The hindered amine base can comprise C.sub.3 -C.sub.10 branched alkyls, cyclic compounds, or mixtures of the above. The preferred amine is N,N-diisopropylethyl amine. The preferred catalyst is PdCl.sub.2 (PPH.sub.3).sub.2 with the excess phosphine generally supplied by a compound of the formula PR.sup.1 R.sup.2 R.sup.3 where R.sup.1, R.sup.2 and R.sup.3 are preferably phenyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.