3-Aryl-5-methylpyrazole-4-carboxylic acid esters

Details 3-Aryl-5-methylpyrazole-4-carboxylic acid esters 3-Aryl-5-methylpyrazole-4-carboxylic acid esters

1981-07-02

1983-08-30

Jiles, Henry R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548378, 548236, 546279, 71 92, 71 90, C07D23114, C07D40504, C07D40104, C07D40904, C07D41304

Patent

active

044018215

ABSTRACT:
Herbicides containing a pyrazole derivative of the formula ##STR1## where R.sup.1 denotes hydrogen, formyl, acetyl, propionyl, chloroacetyl, dichloroacetyl, methoxyacetyl, methoxycarbonyl, or phenoxycarbonyl which is unsubstituted or mono- or polysubstituted by halogen, R.sup.2 denotes phenyl which is unsubstituted or mono- or polysubstituted by fluorine, chlorine, bromine, methyl, methoxy, cyano, nitro, trifluoromethyl, trifluoromethoxy or methoxycarbonyl, R.sup.2 further denotes a 5- to 6-membered, heterocyclic aromatic ring which is unsubstituted or substituted by methyl or chlorine and which contains 1 or 2 hetero-atoms X, X being independently oxygen, sulfur or nitrogen, or R.sup.2 denotes .alpha.-naphthyl or .beta.-naphthyl, and R.sup.3 denotes methyl, ethyl or isopropyl, or a salt of such a pyrazole derivative, a process for combating unwanted plant growth with the active ingredients and methods of manufacturing the herbicides.

REFERENCES:
patent: 3449350 (1969-06-01), Walker
patent: 4166673 (1978-09-01), Brannigan et al.
patent: 4316039 (1982-02-01), Plath et al.
patent: 4316040 (1982-02-01), Plath et al.
Bastide et al., Tetrahedron 1974, vol. 30, pp. 3355-3363.
Aspart-Pascot et al., Compte Rendu 1971, Serie C, vol. 273, pp. 1772-1775.
Sjollema, Annalen 1894, vol. 279, pp. 248-256.

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