Sankyo Company, Limited

Mitsui Chemicals Agro, Inc.

Mitsui Agro Chemicals, Inc.

Sankyo Agro Company, Limited

Shigeru Mio

Yoshihisa Tsukamoto

Kazuo Sato

Toshiaki Yanai

Takao Kinoto

Hiroyuki Komai

Kiyoshi Koi

Junji Kadotani

Hideshi Okui

Hideo Takeshiba

Toyokuni Honma

Soji Sugai

Takashi Sakamoto

A compound represented by the formula: [wherein

3-phenoxy-4-pyridazinol derivatives and herbicidal composition containing the same

A compound represented by the formula: [wherein Rrepresents a hydrogen atom, a halogen, atom, alkyl group, etc.,

3-phenoxy-4-pyridazinol derivatives and herbicide composition containing the same

An N-heteroaryl-4-(haloalkyl)nicotinamide derivative represented by formula (I):[wherein R represents a C&#x2013;Chaloalkyl group; Rrepresents a hydrogen atom, a C&#x2013;Calkyl group which may be substituted a C&#x2013;Calkenyl group or an acyl group; X represents a group represented by formula C&#x2014;R, or a nitrogen atom; Rand Reach independently represent a hydrogen atom, a halogen atom, a C&#x2013;Calkyl group which may be substituted, a C&#x2013;Ccycloalkyl group, a C&#x2013;Calkenyl group, a C&#x2013;Ccycloalkenyl group, a formyl group, a group represented by formula CH&#x2550;NOR, a cyano group, a phenyl group which may be substituted, a heterocyclic group which may be substituted, a C&#x2013;Calkoxy group which may be substituted, a C&#x2013;Calkylthio group or a phenoxy group]; or a salt thereof, a pesticide containing it as an active component, a method for producing it and intermediates thereof.

[object Object]

A process for the preparation of a cinnamic acid ester comprises condensing a benzaldehyde with an acetic acid ester in the presence of a base. The reaction mixture is then treated, without adding an additional solvent or after adding an additional solvent, with an acid to convert a 3-alkoxy-3-phenylpropionic acid ester in the reaction mixture into a corresponding cinnamic acid ester. This procedure allows cinnamic acid ester derivatives of high-purity to be obtained in good yield.

Process for the preparation of cinnamic acid esters

Compounds of formula (I): ##STR1## (in which: R.sup.1 and R.sup.2 are each hydrogen, optionally substituted alkyl, optionally substituted alkenyl, alkynyl, alkoxy, aryl or pyridyl, or R.sup.1 and R.sup.2 together represent alkylene; A and B are each hydrogen, halogen, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkoxy, alkylthio, alkylsulfonyl, dialkylsulfamoyl, aliphatic carboxylic acyl, carboxy, --CONR.sup.a R.sup.b where R.sup.a and R.sup.b are each hydrogen or alkyl, formyl or cyano groups; D represents optionally substituted phenyl, benzyl, pyridyl or pyrimidinyl; and n is 0, 1 or 2; and salts and esters thereof) have valuable herbicidal properties, and, since they are totally innocuous to rice plants, are especially useful for the treatment of paddy fields.

Pyrazole derivatives having herbicidal activity and their use

13-Hydroxy-5-ketomilbemycin derivatives are prepared by oxidizing a 5-ketomilbemycin with selenium dioxide in the presence of a lower aliphatic carboxylic acid. A range of new 13-acyloxy-5-ketomilbemycins and a method of preparing them are also disclosed.

Process for preparing milbemycin derivatives and certain novel compounds

13-Hydroxy-5-ketomilbemycin derivatives are prepared by oxidizing a 5-ketomilbemycin with selenium dioxide in the presence of a lower aliphatic carboxylic acic. A range of new 13-acyloxy-5-ketomilbemycins and a method or preparing them are also disclosed.

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Shiga, Japan

Shigeru Mio