Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1976-01-15
1978-10-03
Myers, Jane S.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
562519, C07C 5100, C07C 5506, C07C 6936
Patent
active
041185897
ABSTRACT:
The present invention relates to a process for preparing oxalic acid and esters of oxalic acid. More particularly, this invention relates to a catalytic process for preparing oxalic acid and esters of same by the oxidative reaction, in a liquid phase, of carbon monoxide and water or alcohols with oxygen in the presence of redox systems.
The catalyst systems used in accordance with this invention comprises a redox catalyst consisting essentially of a salt of Pd (II) and salts of a metal more electropositive than Pd having at least two oxidation states and, optionally, salts of alkaline metals, and co-catalytic amounts of at least one base having the formula R.sub.3 N in which the groups R which may be like or unlike and are selected from the group consisting of hydrogen and alkyl radicals having from 1 to 10 carbon atoms.
REFERENCES:
patent: 3393136 (1968-07-01), Fenton et al.
patent: 3994960 (1976-11-01), Yamazaki et al.
patent: 4005128 (1977-01-01), Zehner
patent: 4005129 (1977-01-01), Zehner
patent: 4005131 (1977-01-01), Zehner
Fenton, et al., J. Org. Chem. 39, No. 5, pp. 701-704 (1974).
Cassar Luigi
Gardano Andrea
Montedison S.p.A.
Myers Jane S.
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