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    • 27. 发明申请
    • 4,6-BIS(SUBSTITUTED)PHENYLAZORESORCINOL AND PROCESS FOR PRODUCING 4,6-DIAMINORESORCINOL
    • 4,6-BIS(取代的)苯并三唑和生产4,6-DIAMINORESORCINOL的方法
    • WO01014319A1
    • 2001-03-01
    • PCT/JP2000/005767
    • 2000-08-25
    • B01J23/02C07C245/08C09B33/04C09B41/00C09B67/54B01J23/44C07C213/02C07C215/80
    • C07C245/08B01J23/02C09B33/04C09B41/001C09B67/0096
    • A process for producing a 4,6-bis(substituted)phenylazoresorcinol represented by formula (2) which comprises mixing a solution of a (substituted) benzenediazonium salt represented by formula (1) with a solution or suspension of the hydroxide of an alkali metal or alkaline earth metal to obtain an alkaline mixture, mixing and reacting this mixture with an aqueous solution of resorcinol and/or of an alkali metal salt or alkaline earth metal salt thereof, and mixing the resultant reaction mixture with an acid liquid to make the mixture acid and thereby crystallize the target compound, characterized in that the acidification of the reaction mixture is conducted by adding the reaction mixture to the acid liquid and mixing them. The process is effective in reducing the time required for filtration for collecting the reaction product to thereby heighten production efficiency. (In the formulae, R represents halogeno, etc.; n is an integer of 0 to 5; and X represents chlorine, etc.).
    • 一种制备由式(2)表示的4,6-双(取代的)苯基氮杂间半乳糖醇的方法,其包括将由式(1)表示的(取代的)重氮盐的溶液与碱金属氢氧化物的溶液或悬浮液 或碱土金属,以获得碱性混合物,将该混合物与间苯二酚和/或其碱金属盐或碱土金属盐的水溶液混合和反应,并将所得反应混合物与酸性液体混合以制备混合物 酸,从而使目标化合物结晶,其特征在于反应混合物的酸化通过将反应混合物加入到酸性液体中并混合来进行。 该方法有效地减少用于收集反应产物的过滤所需的时间,从而提高生产效率。 (式中,R表示卤代等,n表示0〜5的整数,X表示氯等)。