13.
    发明专利
    未知

    公开(公告)号:DE3879935D1

    公开(公告)日:1993-05-06

    申请号:DE3879935

    申请日:1988-09-21

    Applicant: BASF AG

    Abstract: 2-Neophentylanthraquinone (I), prepd. by Friedel-Crafts acylation of neopentylbenzyene (II) with phthalic anhydride (III) and cyclisation of the resultinq adduct (IV), is new. Preferred catalysts for the conversion of (II) to (IV) are aluminium halogenides, esp. ALBr3 and partic. AlCl3, or mixts. thereof. The reaction is carried out in halogenated aromatic solvent (C6H5Cl, C6H4Cl2 or C6H3Cl3), ClCH2CH2Cl, CS2, CH3NO2, or C6H5NO2. The cyclisation step (obtd. (IV) to cpd. (I) is performed in 95 to 105% H2SO4 at a temp. between 20 and 220 deg. C.

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