Process for preparing 2,3-dimethyl-2-butene
AssigneeSumitomo Chemical Company, Limited
InventorsKotohiro Nomura, Michio Yamamoto, Masashi Komatsu
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Abstract
2,3-Dimethyl-2-butene is prepared by isomerizing 2,3-dimethyl-1-butene using at least one acid selected from the group consisting of sulfuric acid and sulfonic acids. By this process, 2,3-dimethyl-2-butene is effectively prepared from 2,3-dimethyl-1-butene using an inexpensive catalyst such as sulfonic acid or the sulfonic acids. Further, a dimerization reaction product of propene can also be used in the isomerization step without removing the dimerization catalyst from the reaction product.
Claims11
A process for preparing 2,3-dimethyl-2-butene consisting essentially of isomerizing 2,3-dimethyl-1-butene by adding at least one acid selected from the group consisting of aqueous solutions of sulfuric acid having a concentration of 90 to 98%, aliphatic sulfonic acids, aromatic sulfonic acids and halogenated sulfonic acids to 2,3-dimethyl-1-butene.
Dependencies are inferred from the claim text.