Process for the preparation of 2,3-dihydrofurans
AssigneeEastman Chemical Company
InventorsJohn R. Monnier, Cris S. Moorehouse
Life of this patent
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Abstract
Disclosed is a process for the preparation of 2,3-dihydrofurans from the corresponding isomeric 2,5-dihydrofurans wherein a 2,5-dihydrofuran compound is contacted with a supported, palladium or platinum catalyst in the presence of carbon monoxide to effect the isomerization of 2,5-dihyrofurans to 2,3-dihydrofurans.
Claims9
Process for the preparation of a 2,3-dihydrofuran compound which comprises contacting at an elevated temperature a 2,5-dihydrofuran with a supported, palladium catalyst in the presence of a selectivity-increasing amount of carbon monoxide and in the substantial absence of hydrogen.
Process for the preparation of 2,3-dihydrofuran which comprises contacting a feed gas comprising 2,5-dihydrofuran, an inert diluent, and about 10 to 500 parts per million by volume carbon monoxide with a supported, palladium catalyst at a temperature of about 30.degree. to 200.degree. C. and in the substantial absence of hydrogen.
Process for the preparation of 2,3-dihydrofuran in the liquid phase which comprises contacting a liquid feed comprising 2,5-dihydrofuran, an inert diluent, and about 100 to 5000 parts per million by volume carbon monoxide with a supported, palladium catalyst at a temperature of about 30.degree. to 200.degree. C. and in the substantial absence of hydrogen.
Process for the preparation of 2,3-dihydrofuran which comprises contacting a feed gas comprising 2,5-dihydrofuran, an inert diluent, and about 20 to 200 parts per million by volume carbon monoxide with a supported palladium catalyst comprising about 0.5 to 3.0 weight percent palladium on a catalyst support material at a temperature of about 50.degree. to 175.degree. C. and in the substantial absence of hydrogen.
Dependencies are inferred from the claim text.