Olefin hydroformylation methods for obtaining branched aldehydes
AssigneeLyondell Chemical Technology, L.P.
InventorsDaniel F. White, Beaven S. Mandimutsira
Life of this patent
Estimating the term…
Abstract
The present technology relates to methods of hydroformylating allyl alcohol to 4-hydroxybutanal and 2-methyl-3-hydroxypropanal, comprising (i) admixing allyl alcohol with CO and H2 to form a starting material mixture, and (ii) reacting the starting material mixture in the presence of a catalyst under conditions capable of forming a product mixture comprising 4-hydroxybutanal and 2-methyl-3-hydroxypropanal, wherein the catalyst is a transition metal complex comprising a transition metal ion and a diphosphine ligand with a bite angle from about 70° to about 100°, and wherein the ratio of 4-hydroxybutanal to 2-methyl-3-hydroxypropanal in the product mixture is less than 1.5:1.
Claims19
A method comprising:
- (i) admixing allyl alcohol with CO and H2 to form a starting material mixture;
- and
- (ii) reacting the starting material mixture in the presence of a catalyst under conditions capable of forming a product mixture comprising 4-hydroxybutanal and 2-methyl-3-hydroxypropanal;
- wherein the catalyst is a transition metal complex comprising a transition metal ion and a diphosphine ligand with a bite angle from about 70° to about 100°, and wherein the ratio of 4-hydroxybutanal to 2-methyl-3-hydroxypropanal in the product mixture is less than 1.5:1.
A method comprising:
- (i) admixing an α-olefin(C3-24) selected from hexene, allyl alcohol, allyl acetate and vinyl acetate, a substituted α-olefin(C3-24), or styrene with CO and H2 to form a starting material mixture;
- and
- (ii) reacting the starting material mixture in the presence of a catalyst under conditions capable of producing linear and branched aldehydes,
- wherein the catalyst is a transition metal complex comprising a transition metal ion and a diphosphine ligand with a bite angle from about 70° to about 100°, and wherein the ratio of the linear to branched aldehydes is less than 1.5:1.
Dependencies are inferred from the claim text.