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:
Jun. 06, 2006
Filed:
Apr. 27, 2001
Hiroki Kodama, Sakai, JP;
Takeshi Katsuhira, Kawachinagano, JP;
Tateki Nishida, Tondabayashi, JP;
Tomokazu Hino, Tondabayashi, JP;
Kenji Tsubata, Kawachinagano, JP;
Hiroki Kodama, Sakai, JP;
Takeshi Katsuhira, Kawachinagano, JP;
Tateki Nishida, Tondabayashi, JP;
Tomokazu Hino, Tondabayashi, JP;
Kenji Tsubata, Kawachinagano, JP;
Nihon Nohyaku Co., Ltd., Tokyo, JP;
Abstract
The present invention provides a process for producing 2-halobenzoic acids of the general formula (I), characterized by reacting a benzoic acid of formula (II) with a halogenating agent in the presence of Pd catalyst: (wherein A is —OH, —OM (M is alkali metal), —N(R)R(Rand Rare each H, C–Calkyl, optionally substituted phenyl, or the like); R is H, C–Calkyl, C–Calkylcarbonyl, carboxyl, C–Calkoxycarbonyl, optionally substituted phenylcarbonyl, or the like; n is 0 to 4; X is Cl, Br or I, or alternatively (R)n may be present on benzene-constituting carbon atoms adjacent to each other and form a C–Calkylene- or C–Calkenylene-fused ring).