25.
    发明专利
    未知

    公开(公告)号:BR8503464A

    公开(公告)日:1986-04-15

    申请号:BR8503464

    申请日:1985-07-22

    Applicant: BASF AG

    Abstract: 5,6-Dihydro-2H-thiopyran-3-carboxaldehydes of the formula where R denotes hydrogen or methyl, are prepared by a method in which acrolein or crotonaldehyde is reacted with hydrogen sulfide in a mineral oil whose boiling point is higher than those of the starting materials and of the end product, and the 5,6-dihydro-2H-thiopyran-3-carboxaldehyde is obtained by distillation. These aldehydes are important intermediates for the preparation of some crop protection agents.

    HERBICIDES CONTAINING 3-ARYL-5-METHYLPYRAZOLE-4- CARBOXYLIC ACID ESTERS, THEIR MANUFACTURE AND USE

    公开(公告)号:CA1169070A

    公开(公告)日:1984-06-12

    申请号:CA351286

    申请日:1980-05-05

    Applicant: BASF AG

    Abstract: Herbicides containing a pyrazole derivative of the formula where R1 denotes hydrogen, formyl, acetyl, propionyl, chloroacetyl, dichloroacetyl, methoxyacetyl, methoxycarbonyl, or phenoxycarbonyl which is unsubstituted or mono- or polysubstituted by halogen, R2 denotes phenyl which is unsubstituted or mono- or polysubstituted by fluorine, chlorine, bromine, methyl, methoxy, cyano, nitro, trifluoromethyl, trirluormethoxy or methoxycarbonyl, R2 further denotes a 5- or 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 R2 denotes .alpha.-naphthyl or .beta.-naphthyl, and R3 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.

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