Process for preparing glyoxylic esters and their hydrates
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United States of America Patent
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Aug 17, 1999
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N/A
app pub date -
Nov 21, 1997
filing date -
Nov 21, 1996
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Expired
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Abstract
Process for preparing glyoxylic esters or their hydrates in which a water-soluble salt of a maleic or fumaric monoester or a mixture thereof is reacted with ozone in aqueous solution at temperatures of from 0 to 50.degree. C., and the corresponding glyoxylic ester or its hydrate is isolated from the resulting reaction mixture.
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