会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 46. 发明公开
    • Process for the preparation of distyryl-biphenyl compounds
    • 制备联苯乙烯 - 联苯化合物的方法
    • EP0873988A2
    • 1998-10-28
    • EP98810321.4
    • 1998-04-15
    • Ciba Specialty Chemicals Holding Inc.
    • Eliu, VictorKanert, WernerIndolese, AdrianoWyser, PhilippSchnyder, Anita
    • C07C303/22C07C309/32
    • C07C303/22C07C303/32C07C309/32
    • The present invention provides a process for the production of a compound of formula:


      in which X is hydrogen, halogen, NO 2 , CF 3 , CN, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, COO-C 1 -C 4 alkyl, CO-C 1 -C 4 alkyl, NH-(C 1 -C 4 alkyl), N(C 1 -C 4 alkyl) 2 ,
      NH(C 1 -C 4 alkyl-OH), N(C 1 -C 4 alkyl-OH) 2 , COOH or SO 3 H or an ester or amide thereof, or COOM or SO 3 M in which M is 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 trisubstituted with a mixture of C 1 -C 4 alkyl and C 1 -C 4 hydroxyalkyl groups;
      Z is hydrogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, CF 3 , halogen (F, Cl, Br, I), SO 3 H or SO 3 M in which M has its previous significance; and
      n is 1 or 2; comprising

      A) rearranging a hydrazobenzene compound having the formula:
      in which Z has its previous significance, to produce in situ a compound having the formula:

      B) diazotising the compound of formula (3) to produce a compound having the formula:
      in which Z has its previous significance and G 1 is a counter ion; and
      C) reacting the compound of formula (4) with 2 moles of a compound having the formula:
      in which X and n have their previous significance, in the presence of an inorganic or organic palladium salt, or a mixture thereof, as catalyst-precursor, to produce a compound having the formula (1).


      The compounds of formula (1) are useful as fluorescent whitening agents.
    • 本发明提供了制备下式化合物的方法:其中X是氢,卤素,NO 2,CF 3,CN,C 1 -C 4烷基,C 1 -C 4烷氧基,COO-C 1 -C 4烷基,COC 1 -C 4烷基,NH - (C 1 -C 4烷基),N(C 1 -C 4烷基)2,NH(C 1 -C 4烷基-OH),N(C 1 -C 4烷基-OH)2,COOH或SO 3 H或其酯或酰胺或其中COOM或SO 3 M M为Na,K,Ca,Mg,铵,单 - ,二 - ,三 - 或四-C1-C4烷基铵,单 - ,二 - 或三 - 羟烷基铵或用C1- C4烷基和C1-C4羟烷基; Z是氢,C1-C4烷基,C1-C4烷氧基,CF3,卤素(F,Cl,Br,I),SO3H或SO3M,其中M具有以前的意义; 并且n是1或2; 包括A)重排具有下式的肼苯化合物:其中Z具有其先前的意义,原位产生具有下式的化合物:B)将式(3)化合物重氮化以制备具有下式的化合物:其中Z 有其先前的意义,G1是反离子; 和C)在无机或有机钯盐或其混合物作为催化剂存在下,使式(4)化合物与2摩尔具有下式的化合物反应:其中X和n具有以前的意义, 前体,以制备具有式(1)的化合物。 式(1)化合物可用作荧光增白剂。