1.
    发明专利
    未知

    公开(公告)号:DE59600662D1

    公开(公告)日:1998-11-19

    申请号:DE59600662

    申请日:1996-05-10

    Applicant: BASF AG

    Abstract: Prodn. of aryl chloroformates of formula ArOCOCl (I) comprises reacting a phenol of formula ArOH (II) with phosgene at 60-180 degrees C and 0.01-5 bar in the presence of a cyclic urea of formula (III). Ar = aryl (opt. substd. by 1-5 of 1-6C alkyl, 2-6C alkenyl, 3-8C cycloalkyl, 4-10C cycloalkylalkyl, 1-6C haloalkyl, 1-6C alkoxy, 1-4C alkylthio, halogen, CN, 2-6C alkanoyloxy, CHO, 2-6C dialkylamino, aryl, aryloxy, arylthio, aroyl, 7-10C aralkyl, 7-10C aralkoxy, arylsulphonyl and 7-10C aralkylthio and/or by 1-2 of COCl and NO2); R1, R2 = 1-4C alkyl; and n = 2 or 3.

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