Process for preparing 2,3-dimethyl-butene-2
AssigneeRuhrchemie Aktiengesellschaft
InventorsJurgen Weber, Wolfgang Bernhagen, Helmut Springer
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Abstract
A process for the preparation of 2,3-dimethylbutene-2 is disclosed, which comprises the steps of converting isovaleraldehyde to isopropylacrolein, hydrogenating .alpha.-isopropylacrolein to form 2,3-dimethylbutanol, dehydrating 2,3-dimethylbutanol to form an olefin mixture comprising 2,3-dimethylbutene-1 and 2,3-dimethylbutene-2, and isomerizing the 2,3-dimethylbutene-1 contained in the mixture into 2,3-dimethylbutene-2. The present process is technically simple and inexpensive to utilize, and results in high yields of the desired product.
Claims19
A process for preparing 2,3-dimethylbutene-2 comprising
- treating isovaleraldehyde by methylenation to form .alpha.-isopropylacrolein,
- treating .alpha.-isopropylacrolein by hydrogenation to form 2,3-dimethylbutanol,
- treating 2,3-dimethylbutanol by dehydration to form an olefin mixture, said olefin mixture including 2,3-dimethylbutene-1 and 2,3-dimethylbutene-2, and
- isomerizing the 2,3-dimethylbutene-1 of said olefin mixture to form 2,3-dimethylbutene-2.
Dependencies are inferred from the claim text.