0-benzoylbenzoic acid prodn
    67.
    发明专利

    公开(公告)号:DE2003599A1

    公开(公告)日:1971-08-05

    申请号:DE2003599

    申请日:1970-01-28

    Applicant: BASF AG

    Abstract: An indane of formula: (where R1 R2 and R3 are each an alkyl group and R1 and/or R3 may also be H) is oxidised with nitrogen dioxide in presence of selenium dioxide to obtain o-benzoylbenzoic acid. The product is an intermediate for the prodn. of anthraquinone.

    68.
    发明专利
    未知

    公开(公告)号:DE1643747A1

    公开(公告)日:1971-07-01

    申请号:DE1643747

    申请日:1968-01-23

    Applicant: BASF AG

    Inventor: ARMBRUST HERBERT

    Abstract: 1,246,018. Malonodialdehyde dioxime. BADISCHE ANILIN- & SODA-FABRIK A.G. 22 Jan., 1969 [23 Jan., 1968], No. 3522/69. Heading C2C. Malonodialdehyde dioxime is prepared by reacting hydroxylamine, or a salt thereof, with a #-aminoacrolein, of formula in which each R is an aliphatic, cycloaliphatic, araliphatic or aromatic hydrocarbon radical, or -NRR represents a heterocyclic ring. The process is preferably effected in an inert solvent, at a temperature of - 10‹ C. to + 105‹ C. and a pH of 2 to 8, using 2 to 6 moles of hydroxylamine, or salt thereof, per mole of #-aminoacrolein.

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