Production of pinacolone
AssigneeMobay Chemical Corporation
InventorDonovan Norman Smith, Jr.
Life of this patent
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Abstract
In the process wherein 4,4,5-trimethyl -1,3-dioxane is contacted with aqueous acid to produce pinacolone, the improvement which comprises effecting the contact in the presence of 2-methyl-but-2-ene, whereby the yield of pinacolone is increased. Advantageously the 2-methyl-but-2-ene is present in approximately equimolar amount with the 4,4,5-trimethyl-1,3-dioxane and the acid is HCl of about 30 to 40% concentration or HBr of about 30 to 50% concentration.
Claims6
In the process wherein 4,4,5-trimethyl-1,3-dioxane is contacted with aqueous acid to produce pinacolone, the improvement which comprises slowly adding the 4,4,5-trimethyl-1,3-dioxane and approximately an equimolar amount of 2-methyl-but-2-ene to stirred aqueous hydrogen halide acid having a concentration of about 20 to 60%, whereby the yield of pinacolone is increased.
Dependencies are inferred from the claim text.