Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1995-07-28
1999-08-10
Shippen, Michael L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
562521, 562890, C07C 6738
Patent
active
059361174
ABSTRACT:
Disclosed is a process for the preparation of aliphatic carbonyl compounds selected from aliphatic carboxylic acids, alkyl esters of aliphatic carboxylic acids and anhydrides of aliphatic carboxylic acids by the carbonylation of olefins in the presence of a catalyst system comprising (1) a primary component selected from at least one Group 6 metal, i.e., chromium, molybdenum, and/or tungsten and (2) a secondary component selected from at least one of certain halides and tertiary and quaternary compounds of a Group 15 element, i.e., nitrogen, phosphorus and/or arsenic. The process constitutes and improvement over known processes since it can be carried out at moderate carbonylation conditions without the necessity of using an expensive noble metal catalyst, volatile, toxic materials such as nickel tetracarbonyl, formic acid or a formate ester.
REFERENCES:
patent: 4323698 (1982-04-01), Haag
Browning, Jr. Horace Lawrence
Mayfield George Geiger
West Elizabeth MacGowan
Zoeller Joseph Robert
Blake Michael J.
Eastman Chemical Company
Gwinnell Harry J.
Shippen Michael L.
Thomsen J. Frederick
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