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Microencapsulated metal catalyst

Foreign code F110005083
File No. A051-62US
Posted date Aug 19, 2011
Country United States of America
Application number 46991602
Gazette No. 20040077905
Gazette No. 7307193
Date of filing Feb 15, 2002
Gazette Date Apr 22, 2004
Gazette Date Dec 11, 2007
International application number JP2002001298
International publication number WO2002070131
Date of international filing Feb 15, 2002
Date of international publication Sep 12, 2002
Priority data
  • P2001-059742 (Mar 5, 2001) JP
  • 2002WO-JP01298 (Feb 15, 2002) WO
Title Microencapsulated metal catalyst
Abstract (US7307193)
A microencapsulated Group VIII metal catalyst which is stable even in air, easy to recover, and reusable is disclosed.
It comprises a polymer with side chains containing an aromatic substituent, and a metal catalyst comprising a Group VIII metal encapsulated in to this polymer.
Scope of claims [claim1]
1. A method for allylation reaction, which comprises reacting a C-nucleophile and an allylic carbonate in the presence of a microencapsulated metal catalyst in which a metal catalyst containing palladium is encapsulated in a polymer that has side chains containing an aromatic substituent,wherein the metal catalyst is a triphenylphosphine metal catalyst represented by the following general formula (I);

M(PPh3) (I)
wherein M represents palladiunm.
[claim2]
2. The method of claim 1, wherein the reaction is performed in the presence of the microrncapsulated triphenyiphosphine metal catalyst Pd(PPh3) and an external ligand.
[claim3]
3. A method for asymmetric synthesis reaction, which comprises reacting a C-nucleophile and an allylic carbonate in the presence of a microencapsulated metal catalyst in which a metal catalyst containing palladium is encapsulated in a polymer that has side chains containing an aromatic substituent, and a chiral ligand, wherein the metal catalyst is a triphenylphosphine metal catylst represented by the following general formula (I);

M(PPh3) (I)
wherein M represents Dalladium.
[claim4]
4. The method of claim 1, wherein the polymer that has side chains containing an aromatic substituent is a polymer having styrene units.
[claim5]
5. The method of claim 3, wherein the polymer that has side chains containing an aromatic substituent is a polymer having styrene units.
  • Inventor, and Inventor/Applicant
  • KOBAYASHI SHU
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
IPC(International Patent Classification)
Reference ( R and D project ) CREST Single Molecule and Atom Level Reactions AREA
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