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. 29, 2000
Filed:
May. 21, 1998
Applicant:
Inventors:
Masuji Motoki, Kanagawa, JP;
Tadahisa Sato, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
562800 ; 564300 ; 564301 ; 430250 ;
Abstract
A method for preparing N,N-disubstituted hydroxylamine compounds represented by the formula (II): HO--N(R.sup.1)(R.sup.2) wherein R.sup.1 and R.sup.2 may be the same or different, and independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aromatic heterocyclic group, which comprises the step of adding a rhenium catalyst and aqueous hydrogen peroxide to a mixture containing a secondary amine compound represented by the formula (I): HN(R.sup.1)(R.sup.2) wherein R.sup.1 and R.sup.2 have the same meanings as those defined above and a dehydrating agent.