Process for the preparation of 2-ethyl-1,3-hexane diol
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United States of America Patent
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Sep 2, 1997
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app pub date -
May 3, 1996
filing date -
Sep 7, 1993
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Abstract
The invention relates to a new, technically simple but efficient process, with a good yield, for the preparation of 2-ethyl-1,3-hexane diol from n-butyraldehyde by aldol condensation in the presence of an alkali metal hydroxide or alkali earth metal hydroxide catalyst. To promote the reaction and to improve its controllability, a neutral phase-transfer catalyst is additionally used in the process according to the invention. 2-Ethyl-1,3-hexane diol is used in insecticides and, for example, in the preparation of polyesters.
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