Method for preparing transition metal complex

Patent metadata

Field	Value
Publication number	US-11414504-B2
Application number	US-201916753556-A
Country	US
Kind code	B2
Filing date	Mar 21, 2019
Priority date	Mar 21, 2018
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

The present invention provides a method for preparing a transition metal complex, including a step of preparing a dispersion including a transition metal salt or alkoxide, and a coordinating solvent; and a step of reacting an organic borate-based compound containing a carbon-based, silyl-based or amine-based cation and a borate-based bulky anion, with the dispersion, wherein the transition metal is one or more selected from the metals in group 7 to group 12.

First claim

The invention claimed is:

1. A method for preparing a transition metal complex, the method comprising:
a step of preparing a dispersion comprising a transition metal salt or alkoxide, and a coordinating solvent; and
a step of reacting an organic borate-based compound containing a carbon-based, silyl-based or amine-based cation, and a borate-based bulky anion, with the dispersion,
wherein the transition metal is one or more selected from metals in group 7 to group 12,
the coordinating solvent comprises one or more selected from the group consisting of acetonitrile, propionitrile, 2-methylpropanenitrile, trimethylacetonitrile, benzonitrile, diethyl ether, diallyl ether, pyridine, dimethylformamide, dimethyl sulfoxide, nitromethane, and nitrobenzene, and
the organic borate-based compound is represented by the following Formula 1:

in the above Formula 1,
A is C, Si or N,
R 0 is each independently hydrogen, an alkyl group of 1 to 20 carbon atoms, an alkoxy group of 1 to 20 carbon atoms, an aryl group of 6 to 20 carbon atoms, or an aryloxy group of 6 to 20 carbon atoms,
m is 3 when A is C or Si, or 4 when A is N,
R 1 to R 4 are each independently hydrogen, a halogen group, or a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, and
o, p, q and r are each independently an integer of 1 to 5.

2. The method for preparing a transition metal complex according to claim 1 , wherein
R 0 is each independently hydrogen, an alkyl group of 1 to 12 carbon atoms, an alkoxy group of 1 to 12 carbon atoms, an aryl group of 6 to 12 carbon atoms, or an aryloxy group of 6 to 12 carbon atoms; and
R 1 to R 4 are each independently hydrogen, a halogen group, or a halogen-substituted alkyl group of 1 to 12 carbon atoms.

3. The method for preparing a transition metal complex according to claim 1 , wherein the borate-based bulky anion is one or more selected from the group consisting of tetrakis(phenyl)borate, tetrakis(pentafluorophenyl)borate, and tetrakis[3,5-bis(trifluoromethyl)phenyl]borate.

4. The method for preparing a transition metal complex according to claim 1 , wherein the transition metal salt is a carboxylate, a nitrate or a hydroxide of the transition metal.

5. The method for preparing a transition metal complex according to claim 1 , wherein the transition metal is one or more selected from the group consisting of Mn, Fe, Co, Ni, Cu and Zn.

6. The method for preparing a transition metal complex according to claim 1 , wherein a molar ratio of the transition metal salt or alkoxide and the organic borate-based compound is 1:1 to 1:3 in the reacting step.

7. The method for preparing a transition metal complex according to claim 1 , further comprising a step of dissolving the organic borate-based compound in a coordinating solvent or non-coordinating solvent prior to reacting with the dispersion.

8. The method for preparing a transition metal complex according to claim 1 , wherein a molar ratio of the transition metal salt or alkoxide and the coordinating solvent is 1:4 to 1:18 in the reacting step.

9. The method for preparing a transition metal complex according to claim 1 , further comprising a step of washing with an organic solvent or distilling the complex obtained from the reacting step.

10. The method for preparing a transition metal complex according to claim 9 , wherein the organic solvent is one or more selected from the group consisting of a linear alkyl solvent, a cyclic alkyl solvent, and an ether solvent.

11. The method for preparing a transition metal complex according to claim 1 , wherein the transition metal complex is used as a catalyst or the precursor thereof, which is used for preparing a polymer.

12. The method for preparing a transition metal complex according to claim 11 , wherein the polymer having a low molecular weight is prepared by polymerizing one or more monomers selected from the group consisting of styrene, isobutene, cyclopentadiene, dicyclopentadiene, and tetrahydrofuran.

13. The method for preparing a transition metal complex according to claim 1 , wherein the transition metal is anhydrous or hydrated.

Assignees

• Lg Chemical Ltd

Inventors

• Choi Gyeong Shin
• Jo Dong Hyun
• Oh Hyun Taek
• Kim Won Hee
• Park Seung Young

Classifications

• C08F4/52

  selected from boron, aluminium, gallium, indium, thallium or rare earths (C08F4/14 takes precedence) · CPC title

• C08F110/10 Primary

  Isobutene · CPC title

• B01J31/1616 Primary

  Coordination complexes, e.g. organometallic complexes, immobilised on an inorganic support, e.g. ship-in-a-bottle type catalysts (catalysts comprising molecular sieves B01J29/00) · CPC title

• B01J2531/10

  Complexes comprising metals of Group I (IA or IB) as the central metal · CPC title

• C07F19/005

  without metal-C linkages · CPC title