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    62.
    发明专利
    未知

    公开(公告)号：DE3137802A1

    公开(公告)日：1983-03-31

    申请号：DE3137802

    申请日：1981-09-23

    Applicant: BASF AG

    Inventor： JANITSCHKE LOTHAR DIPL CHEM DR ,  HOFFMANN WERNER DIPL CHEM DR

    IPC: C07C45/42 ,  C07C49/757 ,  C07C131/08 ,  A23L1/235 ,  A61K7/46

    Abstract: 1-Formyl-2,6,6-trimethyl-cyclohex-1-ene derivatives of the formula I (I) where R is -H or -CH3 and A is O or NOH are prepared by nitrosylating the corresponding 1-formyl-2,6,6-trimethyl-cyclohex-1-ene or -cyclohex-2-ene and, where appropriate, hydrolyzing the resulting oxime (where A is NOH) to the corresponding ketone (where A is O). The compounds I, except where R is H and A is O, are novel.

    63.
    发明专利
    未知

    公开(公告)号：DE3015359A1

    公开(公告)日：1981-10-29

    申请号：DE3015359

    申请日：1980-04-22

    Applicant: BASF AG

    Inventor： HOFFMANN WERNER DIPL CHEM DR ,  DEGNER DIETER DIPL CHEM DR

    IPC: C07C49/245 ,  B01J23/00 ,  B01J27/02 ,  C07B61/00 ,  C07C45/00 ,  C07C45/62 ,  C07C45/65 ,  C07C45/67 ,  C07C45/73 ,  C07C45/74 ,  C07C49/255 ,  C07C67/00 ,  C07C49/825

    Abstract: 1. A process for the preparation of 1-4-hydroxy-phenyl)-butan-3-one (I), wherein A. a corresponding 4-tert.-alkoxy-benzaldehyde of the general formula II see diagramm : EP0038480,P5,F2 where R is H or CH3 , is condensed with acetone under alkaline conditions to give the novel 1-(4-tert.-alkoxy-phenyl)-but-1-en-3-one of the general formula IIIa see diagramm : EP0038480,P5,F4 B. the latter is hydrogenated, during of after this condensation, to give the novel 1-(4-tert.-alkoxyphenyl)-butan-3-one of the formula IIIb see diagramm : EP0038480,P5,F6 and C. isobutene or 2-methyl-but-1(2)-ene is eliminated therefrom, at from 40 to 150 degrees C, in the presence of a catalytic amount of an acid.

    Substd. thiophenes prepn. by dehydrogenation - of dihydrothiophenes or disulphido-bis-dihydrothiophenes, using halogen (cpds.)
    68.
    发明专利
    Substd. thiophenes prepn. by dehydrogenation - of dihydrothiophenes or disulphido-bis-dihydrothiophenes, using halogen (cpds.) 未知

    公开(公告)号：DE2700262A1

    公开(公告)日：1978-07-13

    申请号：DE2700262

    申请日：1977-01-05

    Applicant: BASF AG

    Inventor： ROSSY PHILLIP A DIPL CHEM DR ,  HOFFMANN WERNER DIPL CHEM DR

    IPC: C07D333/32 ,  C07D333/36 ,  C07D333/38 ,  C07D495/04

    Abstract: Prepn. of thiophenes of formula involves (i) dehydrogenation of dihydrothiophenes of formula (II) by means of phosphoric acid chloride or bromide SO2Cl2, SO2Br2, Cl2, Br2, I2, or R10 -CO-N(X)-R9 or (ii) dehydrogenation of disulphido-(3,3')-bis-(dihydrothiophenes) of formula (III): or of dihydrothiophenes of formula (IV) by means of SO2Cl, SO2Br2 or Cl2. In the formula R1 is a gap. (V):- R3-O-, R3-S-, r3-2N-, R3-SO3-, R3-CO-S- or R3-CO-O-; R2 is -CO-OR3, -CN, -CO-NR32 or -CO-R4; R3 and R4 are (cyclo)aliphatic, araliphatic or aromatic gps, and R3 may also be H; R1 and R2 may also together form a gp. R5 is H; R6 is -N-R8, -O-, or -S-; R7 is a (cyclo)aliphatic araliphatic or aromatic gp., or R5 and R7 may form, with the 2 adjacent C atoms, part of an aromatic residue; R8 is H or an aliphatic gp.; R9 is H or -CO-R10-R10 is an (ar)aliphatic or aromatic gp., or 2 R10 gps. may form together a -CO-R11 or -NX-C(R3)2-CO- gp.; R11 is an alkylene gp.; R12 has the same meaning as R1; R13 has the same meaning as R12 or when R12 is (V), R13 may be a gp.: X is Cl or Br; and n = 0 or 1.

    Halo:sulphonyl-thiophene-carboxylic acid prepn. - useful as intermediates for thiophene-saccharin sweetening agents
    69.
    发明专利
    Halo:sulphonyl-thiophene-carboxylic acid prepn. - useful as intermediates for thiophene-saccharin sweetening agents 未知

    公开(公告)号：DE2700261A1

    公开(公告)日：1978-07-13

    申请号：DE2700261

    申请日：1977-01-05

    Applicant: BASF AG

    Inventor： ROSSY PHILLIP A DIPL CHEM DR ,  HOFFMANN WERNER DIPL CHEM DR ,  MUELLER NORBERT DIPL CHEM DR

    IPC: C07D333/38

    Abstract: Prepn. of thiophen carboxylic acids of formula (I) is effected by reaction of a 3-ketothiphan carboxylic acid (II) with a sulphonic acid: R4. SO2Y (III) to give a 3-sulphato deriv. then reacting the product with an alkali metal polysulphide. The resulting cpd. is treated with a sulphuric acid chloride or bromide or with Cl2 to give modified polysulphide which is finally treated with ahalogen and water. In the formula R is CO2R3 or H; R2 is H whe R' is -CO2R3; or R' is -CO2R3 when R' is H; R3 is H or an aliphatic group; X is halo; R4 is an aliphatic or aromatic group; Y is halo, the group OR3 or a group -O3S.R4. Provides simple, more economic process for prodn. of (I) which is intermediate for thiophen-saccharin sweetening agents. A typical cpd. methyl-3-chlorosulphonylthiophen-4-carboxylate, was prepd. by the 4-stage process from methyl 3-hydroxy-dihydrothiophen-4-carboxylate.

    Substd. thiophenes prepn. by dehydrogenation - of dihydrothiophenes or disulphido-bis-dihydrothiophenes, using halogen (cpds.)
    70.
    发明专利
    Substd. thiophenes prepn. by dehydrogenation - of dihydrothiophenes or disulphido-bis-dihydrothiophenes, using halogen (cpds.) 未知

    公开(公告)号：DE2700215A1

    公开(公告)日：1978-07-13

    申请号：DE2700215

    申请日：1977-01-05

    Applicant: BASF AG

    Inventor： ROSSY PHILLIP A DIPL CHEM DR ,  HOFFMANN WERNER DIPL CHEM DR

    IPC: C07D333/26 ,  C07D333/32 ,  C07D333/36 ,  C07D333/38 ,  C07D495/04

    Abstract: Prepn. of thiophenes of formula involves (i) dehydrogenation of dihydrothiophenes of formula (II) by means of phosphoric acid chloride or bromide SO2Cl2, SO2Br2, Cl2, Br2, I2, or R10 -CO-N(X)-R9 or (ii) dehydrogenation of disulphido-(3,3')-bis-(dihydrothiophenes) of formula (III): or of dihydrothiophenes of formula (IV) by means of SO2Cl, SO2Br2 or Cl2. In the formula R1 is a gap. (V):- R3-O-, R3-S-, r3-2N-, R3-SO3-, R3-CO-S- or R3-CO-O-; R2 is -CO-OR3, -CN, -CO-NR32 or -CO-R4; R3 and R4 are (cyclo)aliphatic, araliphatic or aromatic gps, and R3 may also be H; R1 and R2 may also together form a gp. R5 is H; R6 is -N-R8, -O-, or -S-; R7 is a (cyclo)aliphatic araliphatic or aromatic gp., or R5 and R7 may form, with the 2 adjacent C atoms, part of an aromatic residue; R8 is H or an aliphatic gp.; R9 is H or -CO-R10-R10 is an (ar)aliphatic or aromatic gp., or 2 R10 gps. may form together a -CO-R11 or -NX-C(R3)2-CO- gp.; R11 is an alkylene gp.; R12 has the same meaning as R1; R13 has the same meaning as R12 or when R12 is (V), R13 may be a gp.: X is Cl or Br; and n = 0 or 1.

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