Polymer-supported transition catalyst

Patent metadata

Field	Value
Publication number	US-10308562-B2
Application number	US-201515510463-A
Country	US
Kind code	B2
Filing date	Sep 12, 2015
Priority date	Sep 12, 2014
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

Abstract

A long life catalyst is provided that is conveniently and inexpensively capable of being produced and that is highly active and has inhibited metal leakage. According to aspects of the present invention, a catalyst is provided that includes: a polymer including a plurality of first structural units and a plurality of second structural units; and metal acting as a catalytic center, wherein at least part of the metal is covered with the polymer, each of the plurality of first structural units has a first atom constituting a main chain of the polymer and a first substituent group bonded to the first atom, a second atom included in each of the plurality of second structural units is bonded to the first atom, and the second atom is different from the first atom, or at least one of all substituent groups on the second atom is different from the first substituent group.

First claim

The invention claimed is:

1. A catalyst, comprising:
a polysiloxane polymer including a silicon atom and a first substituent group bonded to the silicon atom;
a metal atom acting as a catalytic center; and
an inorganic member or an organic member,
wherein at least a part of the metal is covered with the polymer;
the first substituent group is a hydrogen atom; and
the polysiloxane polymer has a structural unit represented by the following formula

2. The catalyst of claim 1 , wherein the metal is any one of selected from the group consisting of palladium, platinum, ruthenium, rhodium, silver, gold, copper, nickel, cobalt, iron, chromium, manganese, technetium, osmium, molybdenum, tungsten, iridium, rhenium, titanium, zirconium, hafnium, tantalum, niobium, and vanadium.

3. The catalyst of claim 1 , wherein the inorganic member is an alumina or a silicon oxide.

4. A method of producing the catalyst of claim 1 , the method comprising:
preparing a metal compound including a metal atom acting as a catalytic center, a polysiloxane polymer including a silicon atom and a first substituent group bonded to the silicon atom, and an inorganic member or an organic member; and
reacting the metal compound and the polysiloxane polymer to obtain the catalyst of claim 1 , wherein:
the first substituent group is a hydrogen atom; and
the polysiloxane polymer has a structural unit represented by the following formula

5. The method of claim 4 , wherein in the reacting the metal compound and the polysiloxane further comprises a reducing agent to reduce a valence of the metal.

6. A method of producing a compound from a substrate via a catalyzed reaction, the method comprising:
contacting the substrate with the catalyst of claim 1 ; and
allowing the reaction to occur in the presence of the catalyst;
wherein the reaction is selected from the group consisting of: reduction reaction, oxidation reaction, hydrometalation, carbon-carbon bond forming reaction and carbon-nitrogen bond forming reaction.

7. The method of claim 4 , wherein in the reacting metal compound and the polysiloxane polymer, insertion of the metal atom of the metal compound into a bond between the silicon atom and the hydrogen atom occurs.

Assignees

• Toyo Gosei Co Ltd

Inventors

• Miyazawa Takashi
• Tashita Shin-Ya

Classifications

• C08K3/22

  of metals · CPC title

• C08K2003/2244

  of zirconium · CPC title

• B01J23/42

  Platinum · CPC title

• C07C1/321

  the hetero-atom being a non-metal atom · CPC title

• B01J21/04

  Alumina · CPC title