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    PROCESS FOR THE PREPARATION O-SUBSTITUTED HYDROXILAMMONIUM SALTS
    11.
    发明专利
    PROCESS FOR THE PREPARATION O-SUBSTITUTED HYDROXILAMMONIUM SALTS 未知

    公开(公告)号：HU9503038D0

    公开(公告)日：1995-12-28

    申请号：HU9503038

    申请日：1995-10-20

    Applicant: BASF AG

    Inventor： WAHL JOSEF ,  KLEIN ULRICH ,  KEIL MICHAEL ,  WILL WOLFGANG

    IPC: C07C239/20 ,  C07C249/04 ,  C07C249/08 ,  C07C249/12 ,  C07C251/38 ,  C07C251/40

    Abstract: An integrated process for the preparation of O-substituted hydroxyammonium salts of formula (I) without isolation of intermediates comprises: (a) reacting acetone with hydroxylammonium sulphate and sodium hydroxide solution to give acetone oxime of formula (II); (b) treating the obtained (II) solution with NaOH solution and completely eliminating water; (c) reacting the obtained suspension of acetone oxime sodium salt of formula (III) with an alkylating agent RY (IV) at 0.5-15 (preferably 1-4) bar and at up to 140 degrees C in presence of a phase transfer catalyst, to give an acetone oxime ether of formula (V); and (d) cleaving (V) with HX to give (I). Steps (a)-(c) are carried out in the same non-polar, aprotic solvent and step (d) is effected with concentrated acid. H2NOR.HX (I) Me2C=NOH (II) Me2C=NONa (III) Me2C=NOR (V) R = 1-6C alkyl or 2-6C alkenyl (both optionally substituted by halo); X = Cl or Br; and Y = nucleofugous group.

    17.
    发明专利
    未知

    公开(公告)号：DE59611017D1

    公开(公告)日：2004-07-01

    申请号：DE59611017

    申请日：1996-07-02

    Applicant: BASF AG

    Inventor： KOENIG HARTMANN ,  GOETZ NORBERT ,  KLEIN ULRICH ,  ELLER KARSTEN

    IPC: C07D231/20 ,  C07D231/22 ,  C07D401/04

    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 THE PREPARATION OF HYDROXYLAMINE ETHERS AND THEIR SALTS AND INTERMEDIATES FOR THIS PURPOSE
    18.
    发明专利
    PROCESS FOR THE PREPARATION OF HYDROXYLAMINE ETHERS AND THEIR SALTS AND INTERMEDIATES FOR THIS PURPOSE 未知

    公开(公告)号：CA2151817C

    公开(公告)日：2004-06-29

    申请号：CA2151817

    申请日：1993-12-17

    Applicant: BASF AG

    Inventor： HARREUS ALBRECHT ,  GOETZ NORBERT ,  MAYWALD VOLKER ,  RANG HARALD ,  MISSLITZ ULF ,  KLEIN ULRICH

    IPC: C07C239/20 ,  C07C251/54 ,  C07C253/30 ,  C07C255/54 ,  C07C259/06 ,  C07C255/64

    Abstract: In order to prepare hydroxylamino-ethers having formula (I), in which X stan ds 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 w 4 when Y and all X's sand 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 alkylating 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 converged into the fre e compound (I) by means of a base. The hydroxylamino-ethers (I) constitute intermediate products for plant protecting and pharmaceutical agents.

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