Mitsui Toatsu Chemicals, Incorporated

Yasunobu Funakoshi

Takeo Yoshimoto

Yoshikata Hojo

Takashi Fujita

Akira Hosono

Joh Miki

Yuji Enomoto

Teruhiko Toyama

Masaaki Ura

Naoki Sato

Kengo Oda

Keiichi Igarashi

Hajime Tachibana

Novel diphenyl ether hydrazine derivatives, particularly 2-nitro-5 (nucleus-substituted phenoxy) phenylhydrazine derivatives are provided. They are useful as a selective herbicide having a high herbicidal activity and residual efficacy.

Diphenyl ether derivatives and herbicides containing same

Novel diphenyl ether hydrazine derivatives, particularly 2-nitro-5 (nucleus-substituted phenoxy) phenylhydrazine derivatives are provided. They are useful as a selective herbicide having a high herbicidal acitivity and residual efficacy.

A tetrahydrofuran derivative represented by the general formula ##STR1## wherein X.sub.1 and X.sub.3 represent a hydrogen or halogen atom, and X.sub.2 represents a halogen atom or a trifluoromethyl group. The compounds have excellent herbicidal activity and can be prepared by reacting a compound of the formula ##STR2## wherein R represents a nitro group or a group of the formula ##STR3## in which X.sub.1, X.sub.2 and X.sub.3 are as defined above, with 3-hydroxytetrahydrofuran in the presence of an alkali.

Tetrahydrofuran derivatives

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Kanagawa, Japan

Yasunobu Funakoshi