9.
    发明专利
    未知

    公开(公告)号:EE9800270A

    公开(公告)日:1999-02-15

    申请号:EE9800270

    申请日:1997-02-20

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP97/00803 Sec. 371 Date Aug. 24, 1998 Sec. 102(e) Date Aug. 24, 1998 PCT Filed Feb. 20, 1997 PCT Pub. No. WO97/30993 PCT Pub. Date Aug. 28, 1997Pyrazolylhetaroyl derivatives of the formula I where the substituents have the following meanings: L and M are hydrogen, C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C1-C4-alkoxy, it being possible for these groups to be unsubstituted or substituted by one to five halogen atoms or C1-C4-alkoxy; halogen, cyano, nitro; X is oxygen or sulfur which can be substituted by one or two oxygens; n is zero, one or two; and Q, R1, R2, R3 and R4 have the meanings given in claim 1, processes for the preparation of the pyrazol-4-yl-hetaroyl derivatives, compositions comprising them, and the use of these derivatives or of the compositions comprising them for controlling weeds.

    Process for the preparation of hydroxylamine ethers and their salts and intermediates for this purpose.

    公开(公告)号:PH31689A

    公开(公告)日:1999-01-18

    申请号:PH47561

    申请日:1993-12-28

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP93/03597 Sec. 371 Date Jun. 6, 1995 Sec. 102(e) Date Jun. 6, 1995 PCT Filed Dec. 17, 1993 PCT Pub. No. WO94/14757 PCT Pub. Date Jul. 7, 1994Hydroxylamine ethers I I (where X is NO2, CN, halogen, alkyl or haloalkyl, Y is H, NO2, CN, halogen, alkyl or haloalkyl, n is 0-2 or 1-4 where Y and all radicals X are halogen and Alk is unsubstituted or substituted alkylene) and their salts with mineral acids or strong organic acids are prepared by reacting either a hydroximino compound II II (where R1 is alkyl, R2 is alkyl or alkoxy or R1+R2 form an alkylene chain) in the presence of an alkali metal hydroxide, alkali metal alcoholate, alkali metal bicarbonate or alkali metal carbonate as the base, or the corresponding anion II directly, with an alkylating agent III III (where R3 is unsubstituted or substituted alkyl or unsubstituted or substituted phenyl) to give an oximino derivative IV IV said derivative is cleaved by means of a mineral acid or a strong organic acid to give the salt of I and, if desired, the latter is converted by means of a base into the free compound I. The hydroxylamine ethers I are intermediates for crop protection agents and drugs.

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