Process for the preparation of glyoxal, alkylglyoxals and acetals thereof
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United States of America Patent
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Aug 19, 1986
Grant Date -
N/A
app pub date -
Dec 17, 1984
filing date -
Dec 21, 1983
priority date (Note) -
Expired
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Abstract
The invention relates to a process for the preparation of glyoxal, alkylglyoxals and acetals thereof by reacting .alpha.,.beta.-unsaturated dialkylacetals with the equivalent amount of ozone and subsequently subjecting the ozonization products to catalytic hydrogenation, the peroxide-containing ozonization solution being fed continuously into a suspension of the hydrogenation catalyst, while a peroxide content of not more than 0.1 mole/liter is maintained, and cleaving the ozonization products by reduction, after which the dialkylacetals formed in the hydrogenation are, if desired, cleaved to give glyoxal or alkylglyoxals.
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