Preparation of E,Z-butenedial bis(dialkyl acetals)
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United States of America Patent
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Aug 16, 1994
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N/A
app pub date -
Jul 6, 1993
filing date -
Jul 21, 1992
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Abstract
An improved process for preparing E,Z-butenedial bis(dialkyl acetals) by reacting the corresponding 2,5-dialkoxy-2,5-dihydrofurans with the corresponding lower alkanols in the presence of an acid at elevated temperature entails carrying out the reaction in the presence of approximately equimolar amounts of a trialkyl orthoformate and in the presence of catalytic amounts of a strong mineral acid or of a strong organic acid.
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