| 摘要 |
Process for the preparation of branched aldehydes comprising hydroformylation of alkene derivatives of the formula <IMAGE> wherein Z represents a lower alkyl group, optionally substituted by an aryl group, wherein n=0, 1 or 2, in the presence of a catalyst system comprising a rhodium compound and a triphenyl phosphite ligand, wherein the phenyl groups may bear one or two substituents selected from lower alkyl, lower alkoxy and hydroxy, and wherein the phosphite ligand: Rh molar ratio is in the range of from 2 to 10, in the presence of carbon monoxide and hydrogen, in an apolar solvent, at a temperature of </= 80 DEG C at a pressure in the range of from 20 to 75 bar, and subsequent recovery of the predominantly formed branched aldehyde from the obtained normal-branched-aldehyde mixture. |
