Process for preparing 3,4-dioxo-substituted aromatic aldehydes
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United States of America Patent
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Jun 9, 2009
Grant Date -
Mar 5, 2009
app pub date -
Jul 25, 2006
filing date -
Jul 25, 2005
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Abstract
A new process for synthesizing 3,4-dioxo-substituted aromatic aldehydes by Oppenauer oxidation of the corresponding benzyl alcohols is described. The process, which specifically uses formaldehyde as hydrogen acceptor, proceeds with unexpectedly high yields and conversion percentages, allowing low cost access to finished and intermediate products of high industrial interest in the field of pharmaceutical products and fragrances.
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