专利名称：Process for the preparation of dye
intermediates
发明人：VINCZE, JANOS,HERTER, WILFRIED申请号：EP89810869.1申请日：19891113公开号：EP0370953A3公开日：19910502
摘要：A process for the preparation of compounds of the formula which is
characterised in that a compound of the formula is reacted with a halogenating agent inthe presence of a compound of the formula NA (2a> and in which the symbols have themeaning indicated in Claim 1, is described. The compounds obtainable by the process areuseful coupling components for the synthesis of cationic dyes.
申请人：CIBA-GEIGY AG
地址：Klybeckstrasse 141 CH-4002 Basel CH
国籍：CH
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