1.
    发明专利
    未知

    公开(公告)号:DE2163059A1

    公开(公告)日:1973-06-20

    申请号:DE2163059

    申请日:1971-12-18

    Applicant: BASF AG

    Abstract: Production of 1-amino-4-hydroxyanthraquinones, which can be substituted in the 2- and 3-positions by carboxylic acid, carboxylic ester or alkyl groups or chlorine or bromine, by heating 3'-nitrobenzoyl-benzoic acids, which can be substituted in the 4'- and 5'-positions, in sulfuric acid or oleum in the presence of boric acid, boric acid esters, boron trihalides or their complex compounds to temperatures between about 120 DEG and 200 DEG C. The reaction products are dyes or intermediates for valuable disperse dyes.

    6.
    发明专利
    未知

    公开(公告)号:DE1768786A1

    公开(公告)日:1972-02-24

    申请号:DE1768786

    申请日:1968-06-29

    Applicant: BASF AG

    Abstract: 1,262,593. o-Amino benzonitriles. BADISCHE ANILIN- & SODA-FABRIK A.G. 26 June, 1969 [29 June, 1968], No. 32351/69. Heading C2C. o-Aminobenzonitriles which may be substituted in the ring by one or two halogen atoms or aliphatic radicals are prepared by decomposing an isatin-#-oxime of the formula where R 1 and R 2 , which may be the same or different, each denotes a hydrogen or halogen atom or an aliphatic radical, in the presence of a basic compound e.g. alkali metal hydroxides, carbonates, alcoholates, carboxylates at a temperature in the range 130-200‹ C. In examples, 2-aminobenzonitrile and 5-chloro- (or 5-methyl)-2-aminobenzonitrile are prepared. Starting materials include 5-isobutyl-, 5,7-dibromo and 4-methyl-5-chloroisatin #-oxime.

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