The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 2014
Filed:
Feb. 16, 2011
Shu Kobayashi, Tokyo, JP;
Hiroyuki Miyamura, Saitama, JP;
Shu Kobayashi, Tokyo, JP;
Hiroyuki Miyamura, Saitama, JP;
Japan Science and Technology Agency, Saitama, JP;
Abstract
The present invention provides a Scandium catalyst that can be used in water or water-soluble organic solvent with no leaching of Scandium. Provided is a gold-polymer nanostructure-immobilized Scandium catalyst, which is formed by preparing, in liquid phase, a mixture comprising gold clusters with from 1 to 50 nm of diameter, disulfide monomer, sulfonic acid salt of disulfide and Lewis acid metal compound represented by ScY, wherein Y is OSOCFetc., and polymerizing the mixture in the presence of a radical polymerization initiator, wherein the disulfide monomer is represented by the formula below:CH═CH—R—S—S—R—CH═CHwherein Rrepresents a divalent hydrocarbon, which may contain an ether bond, and the sulfonic acid salt of disulfide is represented by the formula below:MOS—R—S—S—R—SOMwherein Rrepresents a divalent hydrocarbon, which may contain an ether bond, and M represents an alkali metal. This catalyst is useful as a catalyst for aldol reactions, cyanolation reactions, allylation reactions, Michael reactions, Mannich reactions, Diels Alder reactions and Friedel Crafts reactions in water or water-soluble organic solvent.