32.
    发明专利
    未知

    公开(公告)号:CH602552A5

    公开(公告)日:1978-07-31

    申请号:CH984576

    申请日:1976-08-02

    Applicant: BASF AG

    Abstract: A process for the manufacture of alpha , beta , gamma , delta -unsaturated esters containing a very high proportion of the 4(Z)-isomer, which are valuable perfume and flavor materials. The alpha , beta , gamma , delta -unsaturated esters are manufactured by a Wittig synthesis from phosphoranes and fumaraldehyde-acid esters under specific conditions.

    3-halocyclohex-2-enylideneacetaldehydes and schiff's bases - - prepd from 3-methylcyclohex-2-en-1-ones

    公开(公告)号:DE2152193A1

    公开(公告)日:1973-04-26

    申请号:DE2152193

    申请日:1971-10-20

    Applicant: BASF AG

    Abstract: Cpds. of formulae (I) and (II): (where R1-R5 are H or aliphatic or aromatic gps.; Y is halogen; R6 and R7 are H or aliphatic or aromatic gps.; or NR6R7 is a heterocyclic ring; X is an equiv. of an anion) are prepd. by reacting a cpd. (III): with an acid halide of H3PO3, H3PO4, H2CO3, (COOH)2, H2SO3 or H2SO4 and R6R7NCHO to give (II), which can then be saponified to (I) in known manner. (I) and (II) are inters. for pharmaceuticals, dyes (esp. polymethines useful as photographic optical sensitisers), pesticides and perfumes.

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