中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

11 records (took 0.021 seconds)

    PROCESS FOR THE PREPARATION O-SUBSTITUTED HYDROXILAMMONIUM SALTS
    2.
    发明专利
    PROCESS FOR THE PREPARATION O-SUBSTITUTED HYDROXILAMMONIUM SALTS 未知

    公开(公告)号：HUT73159A

    公开(公告)日：1996-06-28

    申请号：HU9503038

    申请日：1995-10-20

    Applicant: BASF AG

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

    IPC: C07C239/20 ,  C07C249/04 ,  C07C249/08 ,  C07C249/12 ,  C07C251/38 ,  C07C251/40 ,  C07C251/36

    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.

    PROCESS FOR THE PREPARATION O-SUBSTITUTED HYDROXILAMMONIUM SALTS
    4.
    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.

    PREPARATION OF 1-HYDROXYMETHYLOXIRANES WHICH ARE Z-SUBSTITUTED IN THE 2-POSITION
    7.
    发明专利
    PREPARATION OF 1-HYDROXYMETHYLOXIRANES WHICH ARE Z-SUBSTITUTED IN THE 2-POSITION 未知

    公开(公告)号：CA2004489A1

    公开(公告)日：1990-07-18

    申请号：CA2004489

    申请日：1989-12-04

    Applicant: BASF AG

    Inventor： ZIERKE THOMAS ,  SAUTER HUBERT ,  SCHULZ GUENTER ,  WILL WOLFGANG

    IPC: C07C49/83 ,  C07D303/14 ,  C07F7/18 ,  C07C49/76 ,  C07D303/12

    Abstract: A process for the preparation of 1-hydroxymethyloxiranes which are Z-substituted in the 2-position, of the general formulae I and ent-I and (I) (ent-I) where A and B independently of one another are each C1C4-alkyl, phenyl, naphthyl or diphenyl or are each phenyl which is substituted by one to three radicals from the group consisting of halogen, C1-C4-alkyl, C1-C4-alkoxy, C1C4-haloalkyl, nitro and phenoxy, by reacting a ketone of the general formula II (II) where A and B have the abovementioned meanings and X is a group which can be eliminated under the reaction conditions, with trimethylsulfonium methylsulfate and a suitable base or with dimethyloxosulfonium methylide, and novel ketones of the general formula II' (II') where A' is phenyl or 4-fluorophenyl, B' is 2-fluoro-phenyl, 2-chlorophenyl, 2-bromophenyl or 2-trifluoro-methylphenyl and X' is hydroxyl or a leaving group, with the proviso that B' is not 2-chlorophenyl when A' is phenyl is described.

    PLANT GROWTH REGULATORS COMPRISING TRIAZOLE DERIVATIVES AND PROCESS FOR PRODUCING THE ACTIVE INGREDIENTS
    9.
    发明专利
    PLANT GROWTH REGULATORS COMPRISING TRIAZOLE DERIVATIVES AND PROCESS FOR PRODUCING THE ACTIVE INGREDIENTS 未知

    公开(公告)号：HUT47389A

    公开(公告)日：1989-03-28

    申请号：HU254388

    申请日：1988-05-19

    Applicant: BASF AG

    Inventor： LAUER MANFRED ,  SAUTER HUBERT ,  KOESER KARL ,  JUNG JOHANN ,  RADEMACHER WILHELM ,  WILL WOLFGANG

    IPC: A01N43/653 ,  A01N49/00 ,  C07D249/08 ,  C07D521/00

    Abstract: Triazole compounds of the formulae Ia and Ib where R1 is hydrogen or cyclopropyl, or is C1-C4-alkyl, C2-C4-alkenyl or C2-C4-alkynyl, each of which is unsubstituted or substituted by methyl, ethyl, ethenyl, ethynyl, hydroxyl, fluorine, chlorine, bromine or C1-C4-alkoxy, or is C1-C4-alkoxy, C2-C4-alkenyloxy or C2-C4-alkynyloxy, R2 and R3 independently of one another are each hydrogen, straight-chain or branched C1-C3-alkyl, and R2 and R3 together may furthermore form a carbocyclic ring which has up to six members in each ring system and may possess bridge members, with the proviso that, in formula Ia, two or more of the radicals R1-R3 are not hydrogen, and is hydrogen, an acyl radical CO-R5 or a sulfonyl radical SO2R5, R5 being straight-chain or branched C1-C8-alkyl or unsubstituted or substituted phenyl, or is a metal cation or ammonium, are used as plant growth regulators.

Patent Agency Ranking