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. 31, 2011
Filed:
Jun. 05, 2006
Applicants:
Tetsuya Ikemoto, Toyonaka, JP;
Yosuke Watanabe, Osaka, JP;
Inventors:
Tetsuya Ikemoto, Toyonaka, JP;
Yosuke Watanabe, Osaka, JP;
Assignee:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 47/00 (2006.01); C07C 31/18 (2006.01); C07D 493/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides; a process for producing a compound (IV) comprising a step of reacting a compound (I) with a compound (II) in the presence of an optionally substituted cyclic secondary amine to obtain a compound (III) and a step of sequentially or simultaneously eliminating Rand Rfrom the compound (III), and then cyclizing the R- and R-eliminated compound to obtain the compound represented by the formula (IV); a process for producing a high purity compound (IV); an intermediate thereof; and a process for producing an intermediate.