Pyrazole derivatives having herbicidal activity and their use

Details Pyrazole derivatives having herbicidal activity and their use Pyrazole derivatives having herbicidal activity and their use

1994-07-05

1995-06-13

Ramsuer, Robert W.

Plant protecting and regulating compositions

Plant growth regulating compositions

Organic active compound containing

5483667, 5483697, A01N 4356, C07D23120

Patent

active

054242797

ABSTRACT:
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.

REFERENCES:
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patent: 4316040 (1982-02-01), Plath et al.
patent: 4331678 (1982-05-01), De'Auth et al.
Chemical Abstracts, vol. 106, No. 9, Mar. 2, 1987, Columbus, Ohio, USA H. Braeuniger et al. "Reactions of 2-cyano-3-(2-cyano-(2-cyano-ethylthio)-3-methylthioacrylic acid esters" p. 72, col. 2, abstract No. 61 342s & Wiss. Z. Wilhelm-Pieck-Univ. Rostock, Naturwiss. Reihe 1984, 33(8), 67-74 (Ger.).
Chemical Abstracts, vol. 106, No. 9, Mar. 2, 1987, Columbus, Ohio, USA K. Peseke "Synthesis of substituted pyrazolo (2,3-a) (1,3,5)triazines" p. 581, col. 2, abstract No. 97 217a & Pharmazie 1975, 30(4), 258-9 (Ger.).
Chemical Abstracts, vol. 82, No. 7, Feb. 17, 1975, Columbus, Ohio, USA H. Werbs et al. "Reactions of 4-ethoxycarbonyl-3-amino-2-aminocarbonyl-5-methyl-thiopyrazole with isocyanates and isothiocyanates" p. 426, col. 2, abstract No. 43 249y & Pharmazie 1974, 29(10-11), 687-9 (Ger.).

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