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    22.
    发明专利
    未知

    公开(公告)号：DE4244390A1

    公开(公告)日：1994-06-30

    申请号：DE4244390

    申请日：1992-12-29

    Applicant: BASF AG

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

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

    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.

    26.
    发明专利
    未知

    公开(公告)号：DE4231297A1

    公开(公告)日：1994-03-24

    申请号：DE4231297

    申请日：1992-09-18

    Applicant: BASF AG

    Inventor： KUEKENHOEHNER THOMAS DR ,  GOETZ NORBERT DR ,  FISCHER ROLF DR ,  SCHNURR WERNER DR ,  BORCHERS DIRK DR

    IPC: C07D307/32 ,  C07D307/33

    Abstract: 3-(2'-Oxyethyl)dihydro-2(3H)furanones of the general formula I in which R denotes hydrogen or acetyl, are prepared by reaction of ethylene oxide with acetoacetic acid esters of the general formula II in which R denotes C1- to C4-alkyl, by carrying out the reaction in alcoholic solutions in the presence of alkali metal alkoxides at temperatures from 20 to 100 DEG C and pressures from 1 to 20 bar.

    27.
    发明专利
    未知

    公开(公告)号：DE59004462D1

    公开(公告)日：1994-03-17

    申请号：DE59004462

    申请日：1990-04-19

    Applicant: BASF AG

    Inventor： HERMELING DIETER DR ,  HARREUS ALBRECHT DR ,  WILD JOCHEN DR ,  GOETZ NORBERT DR

    IPC: C07C43/215 ,  C07C43/313 ,  C07C45/51 ,  C07C69/025 ,  C25B3/23 ,  C25B3/02

    Abstract: A method of preparation of benzaldehyde dialkyl acetals of the general formula in which R is an alkyl radical containing 1 to 6 carbon atoms, R , R and R are hydrogen or halogen atoms, straight-chain, branched or ring-type hydrocarbon radicals or alkoxy, acyloxy, aryloxy or aralkoxy radicals and n is the integer 1 or 2. In this method benzyl derivatives of the general formula in which R , R and R and n have the abovementioned meaning, R is a hydrogen atom or an R -CO- radical and R is a hydrogen atom or an alkyl radical containing 1 to 6 carbon atoms are anodically oxidised in the presence of an alcohol of the formula R -OH, in which R has the abovementioned meaning.

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