Linear Carboxylic Acids from Syngas
The versatility of palladium as a selective carbonylation catalyst is well recognized (1, 2); far less attention, however, has been given to ensuring the long-term activity of these solubilized palladium species. Two very different classes of novel palladium homogeneous catalyst systems are described herein whose function is to convert readily available petrochemical feed stocks viz. linear α-olefins and 1, 3-butadiene, to linear, short-chain fatty acids (SFA’s) and their ester derivatives. Particular emphasis has been given to identifying those parameters which ensure extended catalyst activity for the palladium and thereby high turnover numbers and multi-cycle synthesis.
KeywordsTertiary Amine Palladium Catalyst Ester Yield Calculated Basis Palladium Acetate
Unable to display preview. Download preview PDF.
- 1.Maitlis, P. M., The Organic Chemistry of Palladium Vol. II, p. 18, Academic Press, New York, 1971.Google Scholar
- 2.Heck, R. R., Organotransition Metal Chemistry, p. 201, Academic Press, New York, 1974.Google Scholar
- 3.Prescott, J. H., Chem. Eng. (N. Y.), 84, 121 (1977).Google Scholar
- 6.Fenton, D. M., U. S. Pat. 3, 509, 209 (1970).Google Scholar
- 7.Billups, W. E., Walker, W. E., and Shields, T. C., Chem. Comm. 1067, 1971.Google Scholar
- 9.Knifton, J. F., U. S. Pat. Pending.Google Scholar
- 11.Walker, W. E., Manyik, R. M., Atkins, K. E., and Farmer, M. L. Tetrahedron Lett., 3817 (1970).Google Scholar
- 13.Knifton, J. F., J. Catal., submitted for publication.Google Scholar
- 15.Knifton, J. F., U. S. Patent 3, 957, 368 (1972).Google Scholar
- 16.Parshall, G. W., U. S. Pat. 3, 657, 368 (1972).Google Scholar
- 19.No correction for physical losses of palladium suffered during catalyst handling, carbonylation, regeneration, etc.Google Scholar
- 20.Knifton, J. F., U. S. Pat., 4, 013, 584 (1977).Google Scholar