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    Method of preparing 5-dichloroacetyl-3,3,6-trimethyl-9-oxo-1,5-diazabicyclo(4,3, 0)nonane
    32.
    发明专利
    Method of preparing 5-dichloroacetyl-3,3,6-trimethyl-9-oxo-1,5-diazabicyclo(4,3, 0)nonane 未知

    公开(公告)号：AU4313293A

    公开(公告)日：1993-12-30

    申请号：AU4313293

    申请日：1993-05-18

    Applicant: BASF AG

    Inventor： REISSENWEBER GERNOT ,  RICHARZ WINFRIED ,  KOOB KNUT

    IPC: A01N43/90 ,  C07D487/04

    Abstract: The manufacture of 5-dichloroacetyl-3,3,6-trimethyl-9-oxo-1,5-diazabicyclo[4.3.0]-nonane I by the reaction of 3,3,6-trimethyl-9-oxo-1,5-diaza-bicyclo[4.3.0]nonane II with dichloroacetyl chloride in the presence of a solvent and a base, wherein a) this reaction is carried out in a two-phase system comprising a virtually water-insoluble organic solvent and water, and sodium or potassium hydroxide acting as the base is metered in at a rate corresponding to the rate of consumption of the dichloroacetyl chloride such that the aqueous phase exhibits a pH of from 7 to 9, and b) the resulting product is separated.

    PROCESS FOR THE MANUFACTURE OF 5-DICHLOROACETYL -3,3,6-TRIMETHYL-9-OXO-1,5-DIAZABICYCLO[4.3 .0]NONANE
    33.
    发明专利
    PROCESS FOR THE MANUFACTURE OF 5-DICHLOROACETYL -3,3,6-TRIMETHYL-9-OXO-1,5-DIAZABICYCLO[4.3 .0]NONANE 未知

    公开(公告)号：CA2136872A1

    公开(公告)日：1993-05-18

    申请号：CA2136872

    申请日：1993-05-18

    Applicant: BASF AG

    Inventor： REISSENWEBER GERNOT ,  RICHARZ WINFRIED ,  KOOB KNUT

    IPC: A01N43/90 ,  C07D487/04

    Abstract: 2136872 9324489 PCTABS00028 Described is the preparation of 5-dichloroacetyl-3,3,6-trimethyl-9-oxo-1,5-diazabicyclo¢4,3,0!nonane (I) by reacting 3,3,6-trimethyl-9-oxo-1,5-diazabicyclo¢4,3,0!nonane (II) with dichloroacetyl chloride in the presence of a solvent and a base. The reaction is carried out in a two-phase system comprising a practically water-insoluble solvent and water, and sodium or potassium hydroxide is added as the base in proportion to the amount of dichloroacetyl chloride consumed so that the aqueous phase has a pH of 7 to 9. The solid product formed is then separated off.

    PROCESS FOR PREPARING 3-FORMYL-TETRAHYDRO-THIOPYRANS
    36.
    发明专利
    PROCESS FOR PREPARING 3-FORMYL-TETRAHYDRO-THIOPYRANS 未知

    公开(公告)号：HUT38098A

    公开(公告)日：1986-04-28

    申请号：HU349484

    申请日：1984-09-17

    Applicant: BASF AG

    Inventor： GOETZ NORBERT ,  JAHN DIETER ,  REISSENWEBER GERNOT ,  ECKHARDT HEINZ

    IPC: B01J23/00 ,  B01J23/40 ,  B01J23/50 ,  C07B61/00 ,  C07D335/02

    Abstract: 3-Formyltetrahydrothiopyrans are prepared by hydrogenating a 3-formyl-5,6-dihydro-2H-thiopyran in the presence of a catalyst containing nickel, cobalt, platinum, copper and/or silver; if necessary, the 3-formyl-5,6-dihydro-2H-thiopyrans are prepared by converting bis-( beta -formylethyl) sulfides and/or 3-formyl-4-hydroxytetrahydrothiopyrans in the presence of an acidic catalyst, and, if required, these bis-( beta -formylethyl) sulfides and/or 3-formyl-4-hydroxytetrahydrothiopyrans are prepared by reacting an acrolein with hydrogen sulfide (a) in the presence of a basic catalyst and of methylene chloride, aromatic hydrocarbons and/or 1,1,2-trichloroethane as solvents, and/or (b) in the presence of a carboxamide. The compounds obtainable by the process according to the invention are useful starting materials for the preparation of dyes, drugs and pesticides.

    37.
    发明专利
    未知

    公开(公告)号：BR8503464A

    公开(公告)日：1986-04-15

    申请号：BR8503464

    申请日：1985-07-22

    Applicant: BASF AG

    Inventor： SAUERWALD MANFRED ,  DOCKNER TONI ,  ROHR WOLFGANG ,  REISSENWEBER GERNOT

    IPC: A01N43/18 ,  C07D335/02 ,  C07D333/22

    Abstract: 5,6-Dihydro-2H-thiopyran-3-carboxaldehydes of the formula where R denotes hydrogen or methyl, are prepared by a method in which acrolein or crotonaldehyde is reacted with hydrogen sulfide in a mineral oil whose boiling point is higher than those of the starting materials and of the end product, and the 5,6-dihydro-2H-thiopyran-3-carboxaldehyde is obtained by distillation. These aldehydes are important intermediates for the preparation of some crop protection agents.

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