Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1997-03-27
1998-11-24
Burn, Brian M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
560185, 560191, C07C 6934
Patent
active
058409599
ABSTRACT:
An improved method for the selective oxidation of alkyl-5-valerate to monomethyl adipate (e.g., methyl-5-valerate to monomethyl adipate). By performing the air oxidation at high pressure (i.e.,>10 bars air and preferably 35 to 65 bars) and relatively moderate temperature (i.e., 20 to 120.degree. C.) in the absence of a catalyst, commercial rates of conversion can be sustained at optimum selectivity to the desired product. Such a high pressure process is particularly amenable to continuous operating the oxidation reactor at optimum selectivity at the expense of conversion per pass followed by product separation and recycle of reactants.
REFERENCES:
patent: 4537987 (1985-08-01), Schneider et al.
patent: 4931590 (1990-06-01), Kummer et al.
Burn Brian M.
DSM N.V.
E. I. Du Pont de Nemours and Company
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