Ishihara Sangyo Kaisha, Ltd.

Tatsunori Yoshida

Toru Koyanagi

Kazuhiro Yamamoto

Tetsuo Yoneda

Shigehisa Kanbayashi

Toyoshi Tanimura

Yohei Taguchi

Fumio Kanamori

To provide a method for producing 3-methyl-2-thiophenecarboxylic acid. A method for producing 3-methyl-2-thiophenecarboxylic acid, which comprises reacting 3-methylthiophene with chlorosulfonyl isocyanate, and hydrolyzing the obtained reaction product.

Method for producing 3-methyl-2-thiophenecarboxylic acid

To provide a process for producing an anthranilamide having the 3-position of pyrazole substituted by a bromine atom, or its salt. A process for producing an anthranilamide compound represented by the formula (I) or its salt:   

Process for producing anthranilamide compound

To provide a process for producing a specific anthranilamide compound or its salt. To provide a process for producing an anthranilamide compound represented by the formula (I) or its salt: wherein each of Rand Rwhich are independent of each other, is halogen or haloalkyl; Ris cyclopropyl alkyl or cyclobutyl alkyl; and Hal is a chlorine atom or a bromine atom, which comprises a step of selectively halogenating a compound represented by the formula (II): wherein R, Rand Rare as defined above.

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Kusatsu, Japan

Tatsunori Yoshida