Method of preparing a hydrocarbylated metal-organic compound
View Patent ↗The invention relates to a process for the preparation of a hydrocarbylated metal organic compound, comprising a hydrocarbyl group, a spectator ligand and optionally a ligand, by contacting a metal-organic reagent with a spectator ligand in the presence of at least 2 equivalents of a hydrocarbylating agent. The invention further relates to a hydrocarbylated metal organic compound according to the following formula containing a spectator ligand S equal to (Ar—Z—) s Y(—Z-DR′ n ) q , wherein Y represents the an anionic moiety of S bonded to M of the metal-organic compound, Z an optional bridging group between the Y moiety and the DR′ n and/or Ar group, D an electron donating hetero atom chosen from group 15 or 16, R′ an optional substituent, Ar an electron-donating aryl group, n the number of R′ groups bonded to D, q and s integers with q+s≧1, wherein Y is an imine radical, or wherein the electron donating hetero atom containing group DR′— n is a ketimide, phosphinimide, guanidine, or iminoimidazoline, or a combination thereof.
1. Process for the preparation of a hydrocarbylated metal organic compound, comprising a hydrocarbyl group, a spectator ligand and optionally a ligand, by contacting a metal-organic reagent with a spectator ligand in the presence of at least 2 equivalents, with respect to the metal-organic reagent, of a hydrocarbylating agent.
2. Process according to claim 1 , wherein the hydrocarbylating agent comprises a metal or a metalloid chosen from group consisting of 1, 2, 11, 12, 13 and 14.
3. Process according to claim 2 , wherein the hydrocarbylating agent comprises Li, Mg, Zn, or Al.
4. A process according to claim 1 ,
wherein the spectator ligand is an imine ligand, or an HA adduct of an imine ligand,
wherein HA represents an acid, of which H represents its proton and A its conjugate base.
5. A process according to claim 4 , wherein the metal of the metal-organic reagent is a group 3-11 metal.
6. A process according to claim 1 , wherein the spectator ligand is represented by (HA 1 ) q (-Z-) n (A 2 H) r , wherein A 1 and A 2 are monoacidic cyclopentadienyl comprising ligands, with q and r representing an integer denoting the number of Cp ligands with q+r=1 or 2, optionally linked by n bridging groups Z, A 1 , A 2 separately, or bonded via Z together forming a bidentate diacidic spectator ligand and n being an integer denoting the number of parallel bridging groups Z.
7. A process according to claim 1 ,
wherein the ligand is a ligand according to the formula HCp*-Z—Y(H) b ,
in which Cp* is a delocalized η 5 bonding cyclopentadienyl comprising ligand,
wherein Y is a ligand bonded to Z comprising nitrogen, phosphorus, oxygen or sulfur and having up to 20 non-hydrogen atoms,
wherein Z is a moiety comprising boron, or a member of Group 14, and also sulfur or oxygen, said moiety having up to 20 non-hydrogen atoms, and
optionally Cp* and Z together form a fused ring system and b=0 or 1.
8. A process according to claim 6 , wherein the metal is a group 4, or 5 metal or metalloid, or a metal selected from the lanthanide series.
9. A process according to claim 1 , wherein the ligand, represented by (Ar—Z—) s Y(—Z-DR′ n ) q , with, Y representing an anionic moiety, Z an optional bridging group between the Y moiety and the DR′ n and/or Ar group, D an electron-donating hetero atom chosen from group 15 or 16, R′ an optional substituent, Ar an electron-donating aryl group, n the number of R′ groups bonded to D, q and s integers with q+s≧1.
10. A process according to claim 9 , wherein the metal is a group 4 metal with a valency of 3.
11. A process according to claim 1 , wherein the ligand is represented by
R-D Z-D n R
wherein Z is a bridging group, between two donor atom containing groups (D), D an electron-donating group comprising a hetero atom chosen from group 15 or 16, n is the number of (Z-D) groups, and R is a substituent.
12. A process according to claim 11 , wherein the metal is a metal from group 7-11.