Hydroxylation of olefins
AssigneeExxon Research & Engineering Co.
InventorsRobert C. Michaelson, Richard G. Austin
Life of this patent
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Abstract
A method for preparing polyols such as diols by catalytic hydroxylation of an olefinic compound by reacting the olefinic compound with an organic hydroperoxide and water in the presence of a catalyst comprising osmium compound and a specific halide co-catalyst is disclosed.
Claims10
A process for hydroxylating olefins which comprises reacting at least one olefinic compound having at least one ethylenic unsaturation with water and at least one organic hydroperoxide in the presence of a catalyst composition under conditions and in a manner sufficient to convert at least one of said ethylenic unsaturation to its corresponding diol said catalyst composition comprising:
- (a) Osmium tetroxide;
- and
- (b) at least one co-catalyst selected from the group consisting of alkali metal halide, alkaline earth metal halide, hydrogen halide, quaternary hydrocarbyl phosphonium halide, halogen, and transition metal halide said transition metal being selected from the group consisting of Fe, Co, Ni, Cu, V, Cr, Mn, Sc, Ti, Mo, Ru, Rh, Pd and W.
A process for hydroxylating olefins which comprises admixing to form a liquid reaction mixture, at least one olefinic compound having at least one ethylenic unsaturation, at least one organic hydroperoxide, water in at least a stoichiometric molar ratio with the moles of ethylenic unsaturation to be hydroxylated, and a catalyst composition, under conditions and in a manner sufficient to convert at least one of said ethylenic unsaturation to its corresponding diol hydroxylation product, said catalyst composition comprising:
- (a) osmium tetroxide;
- and
- (b) at least one co-catalyst selected from the group consisting of alkali metal halide, alkaline earth metal halide, hydrogen halide, quaternary hydrocarbyl phosphonium halide, halogen, and transition metal halide said transition metal being selected from the group consisting of Fe, Co, Ni, Cu, V, Cr, Mn, Sc, Ti, Mo, Ru, Rh, Pd, and W.
Dependencies are inferred from the claim text.