Derivatives of 4-vinyl-4'-alpha-hydroxyethyl-biphenyl
    23.
    发明公开
    Derivatives of 4-vinyl-4'-alpha-hydroxyethyl-biphenyl 失效
    4-乙烯基-4'-α-羟乙基 - 联苯的衍生物

    公开(公告)号:EP0849246A3

    公开(公告)日:1998-09-23

    申请号:EP97810972.6

    申请日:1997-12-11

    摘要: The present invention provides compounds having the formula:
    in which R is hydrogen or C 1 -C 4 alkyl, preferably hydrogen and Y is hydrogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, CF 3 , halogen (F, Cl, Br or I) or SO 3 M in which M is H, Na, K, Ca, Mg, ammonium, mono-, di-, tri- or tetra-C 1 -C 4 alkylammonium, mono-, di- or tri-hydroxyalkylammonium or ammonium that is di- or tri-substituted with a mixture of C 1 -C 4 alkyl and C 1 -C 4 hydroxyalkyl groups; a process for their production by partial dehydration of compounds having the formula:
    ; and their use as intermediates in the production of asymmetric or symmetric fluorescent whitening agents.

    摘要翻译: 本发明提供了具有下式的化合物:其中R是氢或C1-C4烷基,优选氢,Y是氢,C1-C4烷基,C1-C4烷氧基,CF3,卤素(F,Cl,Br或I) M是H,Na,K,Ca,Mg,铵,单 - ,二 - ,三 - 或四-C1-C4烷基铵,单 - ,二 - 或三 - 羟烷基铵或铵 C1-C4烷基和C1-C4羟烷基的混合物; 通过使具有下式的化合物部分脱水来制备它们的方法: 以及它们作为生产不对称或对称荧光增白剂的中间体的用途。