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    45.
    发明专利
    未知

    公开(公告)号：DE4130296A1

    公开(公告)日：1993-03-18

    申请号：DE4130296

    申请日：1991-09-12

    Applicant: BASF AG

    Inventor： SCHAEFER BERND DR ,  BUSCHMANN ERNST DR ,  REISSENWEBER GERNOT DR

    IPC: C07C253/10 ,  C07C253/30 ,  C07F9/535

    Abstract: A process is disclosed for producing alpha -chlor-methylen-triorganylphosphorane carboxylic acid derivatives having the formula (I), in which R stands for C organic substituents; A stands for CN or CO-B; B stands for C or O organic residues that remain inert in chlorinating conditions, by chlorinating phosphoranes having the formula (II) with chlorine. Chlorination is carried out in the presence of a mineral base as hydrogen chloride acceptor, whereas chlorine and the base are synchronously but separately introduced into the reaction mixture according to their consumption. The products (I) obtained by this process represent important intermediates for plant protective substances.

    47.
    发明专利
    未知

    公开(公告)号：DE3682371D1

    公开(公告)日：1991-12-12

    申请号：DE3682371

    申请日：1986-10-22

    Applicant: BASF AG

    Inventor： GOETZ NORBERT DR ,  SPROESSER LINHARD DR ,  BUSCHMANN ERNST DR ,  KARBACH STEFAN DR

    IPC: B01J27/00 ,  C07B61/00 ,  C07C45/00 ,  C07C45/64 ,  C07C45/71 ,  C07C49/175 ,  C07C49/255 ,  C07C49/84 ,  C07C67/00 ,  C07C313/00 ,  C07C321/06 ,  C07C323/22

    Abstract: Dialkoxyketone derivs of formula (I) are new. In (I) R1 = 1-13C alkyl; R2 and R3 are each H, 1-4C alkyl; R4, R5, R6, R7 and R8 are each H, halogen, 1-4C alkyl, 1-4C haloalkyl, 1-4C alkoxy, 1-4C alkylthio, 1-4C haloalkoxy, 1-4C haloalkylthio, Ph (opt. substd. by halogen, 1-4C alkyl or 1-4C alkoxy), or 2 neighbouring gps R4, R5, R6, R7 and R8 form a 3-5C alkylene chain opt. substd. by 1-4C alkyl or an opt. substd. annellated aromatic ring; m and n = each 0 or 1; provided that if R4 or R8 = 1-4C alkoxy, R5 or R7 = 1-4C alkylthio, R6 = halogen, 1-4C alkyl, 1-4C alkoxy or Ph, R5 and R6 or R6 and R7 = 1-4C alkoxy, R4, R6 and R8 = halogen and R4, R6 and R7 or R5, R6 and R8 = halogen, and m and n are both 0, not all the other gps on the Ph ring are H; and provided that m and n are both 0, not all R4 = R8 are H.

    Prepn. of trans-alkenol(s) from Wittig reaction of cyclic lactam(s) - without isolation of phosphonium salt and with isomerisation thermally or by irradiation
    48.
    发明专利
    Prepn. of trans-alkenol(s) from Wittig reaction of cyclic lactam(s) - without isolation of phosphonium salt and with isomerisation thermally or by irradiation 未知

    公开(公告)号：DE4006919A1

    公开(公告)日：1991-09-12

    申请号：DE4006919

    申请日：1990-03-06

    Applicant: BASF AG

    Inventor： SEUFERT WALTER DR ,  BUSCHMANN ERNST DR ,  BECKER RAINER DR ,  SEPPELT WOLFGANG DR ,  MACKENROTH WOLFGANG DR ,  KLEIN ULRICH DR

    IPC: C07C29/44 ,  C07C29/56

    Abstract: Prepn. of trans-alkenols of formula HAC=CH(CH2)nCH20H (I) comprises: (a) reaction of an alkanol of formula ACH20H (II), a term phosphine and a hydrogen halide to give a phosphonium salt of formula (III); (b) reaction of unisolated (III) with a base and a cyclic hemiacetal of formula (IV) to give a cis/trans-alkenol mix; and (c) rearrangement of the mixt. thermally or by irradiation (250-450nm) to give (I), chiefly as the trans-isomer. A = 1-16C alkyl; n = 2 or 3; R = organic gp Also claimed is a prepn. of acetate derive of (I) which comprises esterification of (I) with 0Ac0H or a derive, before or after step (c). Pref trans-dec-5-enol (Ia) and trans-tridec-4-enol (Ib). The phosphine is PPh3. Esterification takes place prior to isomerisation and the isomerisation (where esterification is carried out) is thermal. USE/ADVANTAGE - Acetylated derivs. of (Ia) and (Ib) are phenomones which may be used as pesticides. The process does not require expensive or sensitive reagents or isolation of (III) (see eg Helv Chim Actor 60, 1161 (1977)). (6pp Dwg.No.0/0)

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