Process for the production of unsaturated alcohols
AssigneeEastman Chemical Company
InventorStephen N. Falling
Life of this patent
Estimating the term…
Abstract
Disclosed is a process for the conversion of conjugated epoxyalkenes to unsaturated alcohols wherein a conjugated epoxyalkene is catalytically hydrogenated in the presence of a sulfur-modified or sulfided nickel catalyst whereby the epoxide ring is hydrogenolyzed without concomitant hydrogenation of the olefinic unsaturation thereby producing allylic and/or homoallylic alcohols.
Claims7
Process for the preparation of an allylic alcohol, a homoallylic alcohol or a mixture thereof comprising hydrogenating an epoxyalkene wherein the epoxy and ethylenic unsaturation are conjugated in the presence of a sulfur-modified or sulfided nickel catalyst under hydrogenation conditions of temperature and pressure.
Process for the preparation of a mixture of alcohols having the formulas ##STR4## which comprises hydrogenating a conjugated epoxyalkene having the formula ##STR5## in the presence of a sulfur-modified nickel catalyst at a temperature of about 25.degree. to 80.degree. C. and a pressure of about 2.4 to 70 bars absolute;
- wherein the R substituents individually represent hydrogen, lower alkyl, or collectively represent straight or branched chain alkylene of 4 to about 8 carbon atoms, and wherein at least 4 of the R groups represent hydrogen.
Process for the preparation of a mixture of crotyl alcohol (2-buten-1-ol) and 3-buten-1-ol by hydrogenating 3,4-epoxy-1-butene in the presence of a sulfur-modified nickel catalyst selected from sulfur-modified Raney nickel and sulfur-modified supported nickel catalysts wherein nickel constitutes about 25 to 65 weight percent of the total weight of the catalyst at a temperature of about 25.degree. to 80.degree. C. and a pressure of about 2.4 to 70 bars absolute.
Dependencies are inferred from the claim text.