Central Glass Company, Limited

Sagami Chemical Research Center

Kaoru Mori

Takeo Komata

Takashi Kume

Kiyoshi Suzuki

Matsue Kawamura

Tetsuo Takematsu

Yukio Ikeda

Yumiko Kohda

Yumiko Shirakawa

Kiyosi Kondo

Daiei Tunemoto

Tadayuki Kawashima

Kenji Motojima

Shigenori Sakai

Takanori Hamana

Hideko Sakai

Matsue Minezaki

Yumiko Koda

Shoji Yamaoka

Masahiro Watanabe

Tetsu Takematsu

N-phenyltetrahydrophthalamic acid derivatives, methods of producing same, and herbicides containing same as effective components

The present invention provides a method for producing trifluoromethanesulfonyl chloride. This method includes the step of reacting trifluoromethanesulfonic acid with phosphorous trichloride and chlorine. With this method, trifluoromethanesulfonyl chloride can be easily and highly selectively produced at high yield. The reaction may be carried out at about atmospheric pressure. Furthermore, the reaction may be carried out in the presence of phosphorus oxychloride either under a pressurized condition or at about atmospheric pressure.

Method for producing trifluoromethanesulfonyl chloride

N-phenyltetrahydrophthalamic acid derivatives, methods of producing

N-acyl-N-phenylmaleamic acid derivatives, methods of producing same, and

N-aryloxyacyl-n-phenyltetrahydrophthalamic acid derivatives, methods of

N-acyl-n-phenyltetrahydrophthalamic acid derivatives, methods of

N-acyl-N-phenyltetrahydrophthalamic acid derivatives, methods of

There are disclosed an N-propargyl-N-(2-trifluoromethylbenzoyl)-3-substituted benzenesulfonamide represented by the general formula: ##STR1## wherein R.sup.1 represents a halogen atom, a lower alkyl group, a lower alkoxy group, a perfluoro-lower alkyl group having 1 to 4 carbon atoms, a nitro group, a cyano group, a carboxyl group or a lower alkoxycarbonyl group; and R.sup.2 represents a hydrogen atom, a halogen atom, a lower alkyl group, a perfluoro-lower alkyl group having 1 to 4 carbon atoms, a lower alkoxy group, a nitro group, a cyano group, a carboxyl group or a lower alkoxycarbonyl group, and a selective herbicide containing the same as an active ingredient.

N-propargyl-N-(2-trifluoromethylbenzoyl)-3-substituted

Growing community of inventors

Kawagoe, Japan

Kaoru Mori