abstract |
The present invention relates to the field of phosphorus-containing ligands, in particular to novel cis-butene-1,4-diol-based diphosphites, which are compounds of structure (I) or (II), wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 are selected from: -H, -(C 1 -C 12 )alkyl, -O-(C 1 -C 12 )alkyl, and Not all of the groups R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 are -t Bu at the same time. The compounds of structure (I) or (II) can be used as ligands in ligand-metal complexes to catalyze the hydroformylation of olefins and exhibit improved selectivity. |