VERFAHREN ZUR HERSTELLUNG VON O-SUBSTITUIERTEN HYDROXYLAMMONIUMSALZEN
    6.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON O-SUBSTITUIERTEN HYDROXYLAMMONIUMSALZEN 失效
    用于生产邻位取代羟

    公开(公告)号:EP0711274A1

    公开(公告)日:1996-05-15

    申请号:EP94924726.0

    申请日:1994-07-08

    IPC分类号: C07C239

    CPC分类号: C07C239/20

    摘要: In order to prepare O-substituted hydroxylammonium salts having formula (I): R1-CHX-O-NH¿2? . HL, in which L = halogen, hydrogen sulphate; X = H, alkyl; R?1¿ = possibly substituted phenyl, thienyl, furanyl, pyrrolyl or -CR2=CR3R4, in which R?2, R3, R4¿ = H, halogen or alkyl, an acetonoxime-O-alkyl or acetonoxime-O-benzyl ether having formula (II) is reacted with water and a mineral acid H-L while the resulting acetone is continuously removed, and hydrolysis is intermittently carried out at 0-50 °C and under 10-500 mbar pressure. The O-substituted hydroxylammonium salts having the formula (I) are intermediate products for plant protective agents and pharmaceuticals.

    VERFAHREN ZUR HERSTELLUNG VON HYDROXYLAMIN-ETHERN SOWIE DEREN SALZEN UND ZWISCHENPRODUKTE HIERFÜR
    8.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON HYDROXYLAMIN-ETHERN SOWIE DEREN SALZEN UND ZWISCHENPRODUKTE HIERFÜR 失效
    用于生产HYDROXYLAMINE醚及其盐,以及中间产品用于这一目的。

    公开(公告)号:EP0677040A1

    公开(公告)日:1995-10-18

    申请号:EP94903822.0

    申请日:1993-12-17

    IPC分类号: C07C239 C07C251 C07C253 C07C255

    CPC分类号: C07C251/54

    摘要: 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 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 converted into the free compound (I) by means of a base. The hydroxylamine-ethers (I) constitute intermediate products for plant protecting and pharmaceutical agents.

    VERFAHREN ZUR HERSTELLUNG VON HYDROXYLAMIN-ETHERN SOWIE DEREN SALZEN UND ZWISCHENPRODUKTE HIERFÜR
    10.
    发明授权
    VERFAHREN ZUR HERSTELLUNG VON HYDROXYLAMIN-ETHERN SOWIE DEREN SALZEN UND ZWISCHENPRODUKTE HIERFÜR 失效
    用于生产羟胺醚及其盐类及其中间体

    公开(公告)号:EP0677040B1

    公开(公告)日:1999-10-27

    申请号:EP94903822.8

    申请日:1993-12-17

    CPC分类号: C07C251/54

    摘要: 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 R stands for alkyl, R stands for alkyl, alkoxy or R + R 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 R 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 hydroxylamine-ethers (I) constitute intermediate products for plant protecting and pharmaceutical agents.