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    21.
    发明专利
    未知

    公开(公告)号：DE2919755A1

    公开(公告)日：1980-11-27

    申请号：DE2919755

    申请日：1979-05-16

    Applicant: HOECHST AG

    Inventor： JENSEN HARALD DR ,  SCHMIDT ERWIN DR ,  MITZLAFF MICHAEL DR ,  CRAMER JUERGEN DR ,  PISTORIUS RUDOLF DR ,  PIETSCH HARTMUT DR ,  DEHMER CLAUS DR

    IPC: C07C67/00 ,  C07C231/00 ,  C07C231/08 ,  C07C231/12 ,  C07C103/365 ,  C25B3/00

    Abstract: N-Vinyl-N-alkyl-carboxylic acid amides are prepared, starting from N-ethyl-carboxylic acid amides, in a 3-stage process consisting of the following stages: (a) anodic alkoxylation of the N-ethyl-carboxylic acid amides to give N- alpha -alkoxyethyl-carboxylic acid amides; (b) alkylation of these N- alpha -alkoxyethyl-carboxylic acid amides with an alkyl halide or dialkyl sulfate in an alkaline medium to give N- alpha -alkoxyethyl-N-alkyl-carboxylic acid amides; and (c) splitting off of alcohol from the products of stage (b) by heating to temperatures between about 60 DEG and about 350 DEG C. Instead of stages (b) and (c), it is also possible to carry out the following stages after stage (a): (b1) splitting off of alcohol from the N- alpha -alkoxyethylcarboxylic acid amides obtained in stage (a) by heating to temperatures of about 60 DEG to about 600 DEG C., to give N-vinyl-carboxylic acid amides; and (c1) alkylation of these N-vinyl-carboxylic acid amides by reaction with an alkylating agent of the same type as in stage (b) in an alkaline medium. The N-vinyl-N-alkyl-carboxylic acid amides obtained by the process are valuable intermediate products, in particular for the manufacture of homopolymers and copolymers with interesting properties.

    24.
    发明专利
    未知

    公开(公告)号：DE2434548A1

    公开(公告)日：1976-01-29

    申请号：DE2434548

    申请日：1974-07-18

    Applicant: HOECHST AG

    Inventor： SCHMIDT ERWIN DR ,  CLAUSS KARL DR ,  PIETSCH HARTMUT DR ,  JENSEN HARALD DR

    IPC: A23L27/30 ,  C07D291/06 ,  C07D291/08

    Abstract: The potassium salt practically free of fluoride of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide is prepared by cyclization of acetoacetamide-N-sulfofluoride with at least two moles potassium hydroxide, potassium methylate or a mixture of potassium hydroxide and potassium methylate per mole of sulfofluoride in methanol as solvent containing less than 50 % by weight of water at a temperature of from -20 DEG to +60 DEG C and separating the crystalline potassium salt of the oxathiazinone dioxide from the reaction solution. The compound obtained has a pure sweet taste.

    Chemiluminescent 9-sulphonyl-aminocarbonyl-acridinium salts
    29.
    发明专利
    Chemiluminescent 9-sulphonyl-aminocarbonyl-acridinium salts 未知

    公开(公告)号：DE3805318A1

    公开(公告)日：1989-08-31

    申请号：DE3805318

    申请日：1988-02-20

    Applicant: HOECHST AG

    Inventor： KINKEL TONIO DR ,  MOLZ PETER DR ,  SCHMIDT ERWIN DR ,  SCHNORR GERD DR ,  SKRZIPCZYK HEINZ JUERGEN DR

    IPC: C09B15/00 ,  G01N33/533 ,  G01N33/58

    Abstract: Chemiluminescent acridinium derivs. of formula (I) and their quat. ammonium derivs. are new: R1 = H; up to 10C alkyl, alkenyl or alkynyl; benzyl or aryl; R2 and R3 = H, 1-4C alkyl, amino (opt.substd.), COOH, alkoxy, CN, NO2 or halo; R4 = -N(R6)-SO2-XR5 or -N(XR5)-SO2R6; R5 = reactive gp. which, under mild conditions, can form a bond selectively with an NH2, COOH, SH or other functional gp.in a biologically interesting cpd.; R6 = H; up to 10C alkyl, alkenyl or alkoxy; substd. amino; benzyl; aryl; heteroalkyl or heterocyclyl, opt. substd. by OH; amino; alkylamino; 1-4C alkyl, alkenyl or alkoxy; polyalkoxy, aryloxy or heterocyclyl, one or more times, and these substits. may themselves be substd. by heterocyclyl or amino, or together form a heterocycle contg. at least one O, S, NH or N-alkyl; X = arylene bonded to N or S directly or via an alkylene or oxyalkylene gp., and bonded via alkylene or oxyalkylene to R5, and opt. substd. by 1 or more alkyl, alkenyl, OH, NH2, alkoxy or aryloxy gps. and/or heteroatoms; or X = residue of an aliphatic, araliphatic or aromatic aminoacid (not necessarily natural); if R6 = phenyl substd. by 1 or more 1-6C alkyl, then X can also be phenylene. A- is not defined but is an anion in all examples

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