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    1.
    发明专利
    未知

    公开(公告)号：DE3215095A1

    公开(公告)日：1983-10-27

    申请号：DE3215095

    申请日：1982-04-23

    Applicant: BASF AG

    Inventor： THOEMEL FRANK DIPL CHEM DR ,  HOFFMANN WERNER DIPL CHEM DR

    IPC: C07C46/00 ,  B01J23/00 ,  B01J23/72 ,  B01J27/122 ,  B01J31/02 ,  C07B61/00 ,  C07C37/07 ,  C07C39/07 ,  C07C45/00 ,  C07C46/02 ,  C07C46/04 ,  C07C46/06 ,  C07C46/08 ,  C07C46/10 ,  C07C50/02 ,  C07C50/04 ,  C07C67/00

    Abstract: Trimethyl-p-benzoquinone of the formula I (I) is prepared by a process wherein A. 2,5,6-trimethylcyclohex-2-en-1-one or 2,3,6-trimethylcyclohex-2-en-1-one is reacted with air or oxygen at from 0 DEG to 150 DEG C. in a virtually anhydrous low molecular weight alkanol in the presence of a catalytic amount of copper(I) oxide or copper(II) oxide and in the presence of from 1 to 10 moles of a hydrogen halide gas per mole of trimethylcyclohexenone, and thereafter B. the reaction mixture, which essentially contains 2,3,6-trimethylphenol and/or 4-halo-2,3,6-trimethylphenol, is mixed with an alkali metal alcoholate in an amount such that a sample, when moistened with water, has a pH of from 3 to 6, and is then reacted with air, pure oxygen or tert.-butyl hydroperoxide at from 0 DEG to 150 DEG C., or wherein from 1 to 10 mole equivalents of a hydrogen halide gas per mole of substrate to be reacted are passed into a mixture containing a virtually anhydrous low molecular weight alkanol and a catalytic amount of copper(I) oxide or copper(II) oxide at from 0 DEG to 30 DEG C., an alkali metal alcoholate is added in an amount such that a sample, when moistened with water, has a pH of from 3 to 6, about one mole equivalent of 2,3,6-trimethylphenol is added and the mixture is then reacted with air, oxygen or tert.-butyl peroxide at from 0 DEG to 150 DEG C. Trimethyl-p-benzoquinone is an important intermediate for the synthesis of vitamin E.

    Substd. thiophenes prepn. by dehydrogenation - of dihydrothiophenes or disulphido-bis-dihydrothiophenes, using halogen (cpds.)
    8.
    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：DE2615885A1

    公开(公告)日：1977-10-27

    申请号：DE2615885

    申请日：1976-04-10

    Applicant: BASF AG

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

    IPC: C07D333/26 ,  C07D333/32 ,  C07D333/36 ,  C07D333/38 ,  C07D333/50 ,  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.

    Substd. alkynyl-cyclohexanols - are scenting agents having coniferous wood-herb aroma
    10.
    发明专利
    Substd. alkynyl-cyclohexanols - are scenting agents having coniferous wood-herb aroma 未知

    公开(公告)号：DE2558806A1

    公开(公告)日：1977-07-07

    申请号：DE2558806

    申请日：1975-12-27

    Applicant: BASF AG

    Inventor： BAUMANN MANFRED DIPL CHEM DR ,  HOFFMANN WERNER DIPL CHEM DR

    IPC: C07C1/24 ,  C07C13/20 ,  C07C13/28 ,  C07C403/00 ,  C11B9/00 ,  C07C35/18

    Abstract: New substd. 1-alkeninyl-cyclohexanols are of formula (I) (in which R1-4 denote H or CH3; R5 and R6 denote H or satd. or olefinically unsatd. aliphatic 1-6C hydrocarbon gps. which do not contain any heteroatoms; alternatively R5 and R6 form together a 3-5C alkylene bridge; pref. R5 and R6 do not contain together more than 6C). The cpds. have a pleasant coniferous wood-herb scent and can be used in perfume compsns. or for flavouring industrial products. They can also be converted by acid-catalysed rearrangement into the valuable beta-damascones used in perfumery. Cpds. can be produced by reacting together a cyclohexanone (II) and an enin (III), or its alkali salt, in an inert solvent in the presence of a strongly basic condensation agent.

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