Mitsui Toatsu Chemicals, Incorporated

Harumichi Aoki

Kanji Tomiya

Koichi Moriyasu

Yasunaga Iwasaki

Sadafumi Koda

Hideyuki Akieda

Makoto Suzuki

Kengo Oda

Shingo Matsuo

A herbicidal composition is here disclosed which exerts an excellent herbicidal activity and which is harmless to paddy rice. A 1-[1-methyl-1-(substituted phenyl)ethyl]-4,5-dimethyl-3-(substituted phenyl)-3-pyrroline-2-one derivative represented by the formula (I) ##STR1## (wherein X is a chlorine atom, fluorine atom or bromine atom; Y is a hydrogen atom, fluorine atom, chlorine atom or methoxy group; Z is a hydrogen atom, fluorine atom, bromine atom or chlorine atom; and Q is a hydrogen atom or fluorine atom) is a novel compound, and the herbicidal composition containing this compound as a herbicidally active ingredient has the strong activity and high selectivity as the herbicidal composition for paddy fields.

3-pyrroline-2-one derivatives and herbicidal compositions containing same

A 3-azabicyclo[3.1.0]hexane-2-one derivative represented by the following formula (I), and a herbicidal composition containing the same as a herbicidally active ingredient: ##STR1## (wherein X is a halogen atom, an alkyl group having 1 to 3 carbon atoms, an alkoxy group having 1 to 3 carbon atoms or a haloalkyl group having 1 to 3 carbon atoms; Y is a halogen atom or an alkyl group having 1 to 3 carbon atoms; R.sub.1 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms; R.sub.2 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms; m is an integer of 0 to 3; n is an integer of 0 to 2; and when m is 2 or 3, the groups represented by X may be identical or different, and when n is 2, the groups represented by Y may be identical or different).

3-azabicyclo[3.1.0]hexane-2-one derivatives and herbicidal compositions

The present invention is directed to a method for preparing 3,4-trans-4-ethyl-1,3-disubstituted (substituted phenyl)pyrrolidine-2-one represented by the formula (1) ##STR1## which comprises the steps of dissolving 4-ethyl-1,3-disubstituted (substituted phenyl)-3-pyrroline-2-one in an inert solvent, and then reducing the same with sodium boron hydride in the presence of methanol.

Method for preparing pyrrolidine derivatives

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Mobara, Japan

Harumichi Aoki