Method of oxidizing alkyl-5-formyl valerate to monoalkyl adipate
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United States of America Patent
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Nov 24, 1998
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app pub date -
Mar 27, 1997
filing date -
Mar 27, 1997
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Expired
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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.
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