PROCESS FOR THE PREPARATION OF HYDROXYLAMINE ETHERS AND THEIR SALTS AND INTERMEDIATES FOR THIS PURPOSE

    公开(公告)号:CA2151817A1

    公开(公告)日:1994-07-07

    申请号:CA2151817

    申请日:1993-12-17

    Applicant: BASF AG

    Abstract: In order to prepare hydroxylamine-ethers having formula (I), in which X stands for NO2, CN, halogen, alkyl and halogen alkyl; Y stands for H, NO2, CN, halogen, alkyl and halogen alkyl; n equals 0 to 2 or 1 to 4 when Y and all X's stand for halogen; alk stands for possibly substituted alkylene, as well as their salts with mineral acids or strong organic acids, either a hydroxyimino compound having formula (II), in which R1 stands for alkyl, R2 stands for alkyl, alkoxy or R1 + R2 stand for an alkylene chain, is reacted in the presence of an alkali metal hydroxide, alkali metal alcoholate, alkali metal hydrogen carbonate or alkali metal carbonate as bases, or the corresponding anion of (II) is directly reacted with an alkilating agent having formula (III), in which R3 stands for possibly substituted alkyl or phenyl, so that an oximino derivate having formula (IV) is produced. The oximino derivative (IV) is split by a mineral acid or a strong organic acid into a salt of (I), and if desired the latter is converted into the free compound (I) by means of a base. The hydroxilamine-ethers (I) constitute intermediate products for plant protecting and pharmaceutical agents.

    42.
    发明专利
    未知

    公开(公告)号:PT839138E

    公开(公告)日:2004-10-29

    申请号:PT96924848

    申请日:1996-07-02

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP96/02891 Sec. 371 Date Jan. 8, 1998 Sec. 102(e) Date Jan. 8, 1998 PCT Filed Jul. 2, 1996 PCT Pub. No. WO97/03969 PCT Pub. Date Feb. 6, 1997N-substituted 3-hydroxypyrazoles of the formula I where R1 is unsubstituted or substituted alkyl, aryl or heteroaryl and R2, R3 is hydrogen, cyano, halogen or unsubstituted or substituted alkyl, aryl or heteroaryl, are prepared by oxidation of a corresponding pyrazolidin-3-one with atmospheric oxygen in the presence of a metal salt in an essentially pH-neutral medium.

    43.
    发明专利
    未知

    公开(公告)号:DK0839138T3

    公开(公告)日:2004-09-27

    申请号:DK96924848

    申请日:1996-07-02

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP96/02891 Sec. 371 Date Jan. 8, 1998 Sec. 102(e) Date Jan. 8, 1998 PCT Filed Jul. 2, 1996 PCT Pub. No. WO97/03969 PCT Pub. Date Feb. 6, 1997N-substituted 3-hydroxypyrazoles of the formula I where R1 is unsubstituted or substituted alkyl, aryl or heteroaryl and R2, R3 is hydrogen, cyano, halogen or unsubstituted or substituted alkyl, aryl or heteroaryl, are prepared by oxidation of a corresponding pyrazolidin-3-one with atmospheric oxygen in the presence of a metal salt in an essentially pH-neutral medium.

    METHOD OF OBTAINING N-SUBSTITUTED 3-HYDROXYPARASOLES

    公开(公告)号:PL185614B1

    公开(公告)日:2003-06-30

    申请号:PL32449796

    申请日:1996-07-02

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP96/02891 Sec. 371 Date Jan. 8, 1998 Sec. 102(e) Date Jan. 8, 1998 PCT Filed Jul. 2, 1996 PCT Pub. No. WO97/03969 PCT Pub. Date Feb. 6, 1997N-substituted 3-hydroxypyrazoles of the formula I where R1 is unsubstituted or substituted alkyl, aryl or heteroaryl and R2, R3 is hydrogen, cyano, halogen or unsubstituted or substituted alkyl, aryl or heteroaryl, are prepared by oxidation of a corresponding pyrazolidin-3-one with atmospheric oxygen in the presence of a metal salt in an essentially pH-neutral medium.

    PROCESS FOR PRODUCING N-SUBSTITUTED 3-HYDROXYPYRAZOLES

    公开(公告)号:HU9901339A2

    公开(公告)日:1999-08-30

    申请号:HU9901339

    申请日:1996-07-02

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP96/02891 Sec. 371 Date Jan. 8, 1998 Sec. 102(e) Date Jan. 8, 1998 PCT Filed Jul. 2, 1996 PCT Pub. No. WO97/03969 PCT Pub. Date Feb. 6, 1997N-substituted 3-hydroxypyrazoles of the formula I where R1 is unsubstituted or substituted alkyl, aryl or heteroaryl and R2, R3 is hydrogen, cyano, halogen or unsubstituted or substituted alkyl, aryl or heteroaryl, are prepared by oxidation of a corresponding pyrazolidin-3-one with atmospheric oxygen in the presence of a metal salt in an essentially pH-neutral medium.

    PROCESS FOR PREPARING HYDROXYLAMINE-ETHERS AND THEIR SALTS AND THEIR INTERMEDIATES

    公开(公告)号:HU215116B

    公开(公告)日:1998-09-28

    申请号:HU9501904

    申请日:1993-12-17

    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.

    47.
    发明专利
    未知

    公开(公告)号:DE59405913D1

    公开(公告)日:1998-06-10

    申请号:DE59405913

    申请日:1994-07-08

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP94/02239 Sec. 371 Date Jan. 11, 1996 Sec. 102(e) Date Jan. 11, 1996 PCT Filed Jul. 8, 1994 PCT Pub. No. WO95/04032 PCT Pub. Date Feb. 9, 1995Preparation of O-substituted hydroxylammonium salts IR1-CHX-O-NH2.HL(I)(L=halogen, hydrogensulfate; X=H, alkyl; R1=unsubst. or subst. phenyl, thienyl, furanyl, pyrrolyl or -CR2=CR3R4; R2, R3, R4=H, halogen or alkyl) by reaction of an acetone oxime O-allyl or -O-benzyl ether II (II) with water and a mineral acid H-L with continuous removal of the acetone formed in this process, by carrying out the hydrolysis batchwise at 0 DEG -50 DEG C. and under a pressure of 10-500 mbar is described. The O-substituted hydroxylammonium salts I are intermediates for plant protection agents and pharmaceuticals.

    METHOD OF OBTAINING N-SUBSTITUTED 3-HYDROXYPARASOLES

    公开(公告)号:PL324497A1

    公开(公告)日:1998-05-25

    申请号:PL32449796

    申请日:1996-07-02

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP96/02891 Sec. 371 Date Jan. 8, 1998 Sec. 102(e) Date Jan. 8, 1998 PCT Filed Jul. 2, 1996 PCT Pub. No. WO97/03969 PCT Pub. Date Feb. 6, 1997N-substituted 3-hydroxypyrazoles of the formula I where R1 is unsubstituted or substituted alkyl, aryl or heteroaryl and R2, R3 is hydrogen, cyano, halogen or unsubstituted or substituted alkyl, aryl or heteroaryl, are prepared by oxidation of a corresponding pyrazolidin-3-one with atmospheric oxygen in the presence of a metal salt in an essentially pH-neutral medium.

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