Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1981-05-05
1984-01-17
Garner, Vivian
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
560232, 562406, 562497, 562517, C07C 5112
Patent
active
044265379
ABSTRACT:
Carboxylic acids having the structural formula R.sup.1 COOH, wherein R.sup.1 is a linear, branched or cyclic chain alkyl radical of from 1 to 6 carbon atoms or a phenyl-C.sub.n H.sub.2n -radical wherein 1.ltoreq.n.ltoreq.6, are prepared by carbonylating an alcohol having the formula R.sup.1 -OH with carbon monoxide in liquid phase, in the presence of a catalytically effective amount of nickel and an alkyl or acyl halide promoter therefor, at a temperature of at least about 120.degree. C. and under a total pressure of less than 200 bars, and said carbonylation being carried out in the presence of at least one lanthanide salt, and in an initial carboxylic acid reaction medium having the formula R.sup.2 -COOH, wherein R.sup.2 is defined as was R.sup.1 above, and further wherein R.sup.1 and R.sup.2 may be the same or different.
REFERENCES:
patent: 2068265 (1937-01-01), Carpenter et al.
patent: 2135451 (1938-11-01), Loder
patent: 2650245 (1953-08-01), Thomas et al.
patent: 4133963 (1979-01-01), Holmes
Gauthier-Lafaye Jean
Perron Robert
Garner Vivian
Rhone-Poulenc Industries
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