Process for the co-production of carboxylic acids and carboxylic

Details Process for the co-production of carboxylic acids and carboxylic Process for the co-production of carboxylic acids and carboxylic

1982-07-19

1987-05-12

Lone, Werren B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260408, 2604105, 260413, 260546, 260549, 560 51, 560 55, 560 64, 560111, 560103, 560105, 560106, 560112, 560114, 560175, 560179, 560187, 560234, 560 73, 562406, 562497, 562517, C11C 302, C07C 5112, C07C 6737, C07C 6736

Patent

active

046648518

ABSTRACT:
Process for the co-production of carboxylic acids of the general formula R.sup.1 --COOH and R.sup.2 --COOH and carboxylic acid esters of the general formula R.sup.1 --COOCH.sub.2 R.sup.2 and R.sup.2 --COOCH.sub.2 R.sup.1 from carboxylic acid esters of the general formula R.sup.1 --COOR.sup.2 and/or ethers of the general formula R.sup.3 OR.sup.4 (R.sup.1, R.sup.2, R.sup.3, R.sup.4 representing (substituted) alkyl or (substituted) aryl, alkaryl or aralkyl, R.sup.1 also representing H), carbon monoxide and hydrogen at elevated temperature and pressure in the presence of a ruthenium compound, a further Group VIII metal compound, and a compound R.sup.5 Hal or R.sup.5 COHal where R.sup.5 has one of the meanings given for R.sup.2 and Hal is iodine or bromine, the reaction mixture being substantially free from other transistion metal or Group II metal iodides or bromides, and containing a trivalent nitrogen compound containing a group ##STR1## (X=O or S), such as an amide, a carbamate, a urea or a derivative thereof. The process is of special interest for the selective conversion of methyl acetate into ethyl acetate and acetic acid at pressures well below 100 bar.

REFERENCES:
patent: 4189441 (1980-02-01), Braca et al.
patent: 4241219 (1980-12-01), Wan
Merck Index, 9th ed., Merck & Co. Inc., Rahway, N.J. 1976, p. 226, #1782.

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