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:
Feb. 09, 2016
Filed:
Dec. 21, 2004
Nobuhiro Ito, Kawagoe, JP;
Tsuneaki Maesawa, Kawagoe, JP;
Kazushige Muto, Kawagoe, JP;
Kosaku Hirota, Gifu, JP;
Hironao Sajiki, Gifu, JP;
Nobuhiro Ito, Kawagoe, JP;
Tsuneaki Maesawa, Kawagoe, JP;
Kazushige Muto, Kawagoe, JP;
Kosaku Hirota, Gifu, JP;
Hironao Sajiki, Gifu, JP;
WAKO PURE CHEMICAL INDUSTRIES, LTD., Osaka, JP;
Abstract
The subject of the present invention is to provide a method for deuteration, which can obtain a compound having an aromatic ring and/or a heterocyclic ring at an improved deuteration ratio. The present invention relates to a method for deuteration of a compound having an aromatic ring and/or a heterocyclic ring, comprising reacting the compound having an aromatic ring and/or a heterocyclic ring with a heavy hydrogen source in the presence of an activated mixed catalyst of not less than two kinds of catalysts selected from among a palladium catalyst, a platinum catalyst, a rhodium catalyst, an iridium catalyst, a ruthenium catalyst, a nickel catalyst and a cobalt catalyst.