Otsuka Kagaku Kabushiki Kaisha

Otsuka Chemical Co., Ltd.

Otsuka Kagaku Yakuhin Kabushiki Kaisha

Norio Yasudomi

Hisashi Takao

Norio Osaki

Takeshi Goto

Tadateru Murata

Akira Tanaka

Nobuyoshi Asai

Takashi Soeda

Sadahiko Iida

Mitsuyasu Kawata

A pyran derivative represented by a general formula ##STR1## wherein R.sub.1 is hydrogen, lower alkyl, cycloalkyl or phenyl, R.sub.2 is alkyl having 8 to 20 carbon atoms, R.sub.3 is hydrogen, halogen, ##STR2## or --CH.sub.2 N A, R.sub.4 and R.sub.5 being each lower alkyl or cycloalkyl, A being --CH.sub.2 13 , oxygen or nitrogen atom, N A forms five or six-member ring (the ring may have no substitutent or have at least one substituent selected from lower alkyl, lower alkoxy and halogen atom), or an acid salt thereof, are useful as agricultural miticides.

Pyran derivatives

A pyran derivative represented by a general formula ##STR1## wherein R.sub.1 is hydrogen, lower alkyl, cycloalkyl or phenyl, R.sub.2 is alkyl having 8 to 20 carbon atoms, R.sub.3 is hydrogen, halogen, ##STR2## R.sub.4 and R.sub.5 being each lower alkyl or cycloalkyl, A being --CH.sub.2 --, oxygen or nitrogen atom, ##STR3## forms five or six-member ring (the ring may have no substituent or have at least one substituent selected from lower alkyl, lower alkoxy and halogen atom), or an acid salt thereof, are useful as agricultural miticides.

A novel S-methyl N-[{N-methyl-N-(N,N-disubstituted aminosulfenyl)carbamoyl}oxy]thioacetamidate derivative represented by the formula (I): ##STR1## which has insecticidal, miticidal or nematocidal activity comparable to or higher than known methomyl but which is quite low in toxicity to warm-blooded animals as compared to methomyl, is disclosed. An insecticidal, miticidal or nematocidal composition containing the same, and a process for preparing the same are also disclosed. A method for controlling noxious insects, mites or nematodes by using the same is further disclosed.

Carbamate derivatives, insecticidal, miticidal or nematocidal

This invention relates to carbamate derivatives represented by the formula (I): ##STR1## a process for preparing the derivatives and insecticides containing the derivatives.

Carbamate derivatives and insecticidal, miticidal or nematocidal

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Tokushima, Japan

Norio Yasudomi