申请人:Bayer Aktiengesellschaft
公开号:US04263435A1
公开(公告)日:1981-04-21
Triazolylphenyl-triazines of the formula ##STR1## wherein R.sub.1 and R.sub.2 denote alkyl or aryl and X.sub.1, X.sub.2 and X.sub.3 denote alkyl, aralkyl or cycloalkyl, which are obtainable by reacting corresponding 3-hydroxyphenyl-triazoles with corresponding 2,4-dihydroxy-triazinium compounds, are outstandingly suitable for the preparation of 4-(1,2,3-triazol-2-yl)-salicylaldehydes, which in turn are starting materials for the preparation of optical brighteners of the type of the triazolylcoumarins.
式子为##STR1##的Triazolylphenyl-triazines,其中R.sub.1和R.sub.2代表烷基或芳香基,X.sub.1,X.sub.2和X.sub.3代表烷基,芳基烷基或环烷基,这些Triazolylphenyl-triazines可以通过将相应的3-羟基苯基三唑与相应的2,4-二羟基三唑化合物反应而获得,它们非常适合用于制备4-(1,2,3-三唑-2-基)-水杨醛,而这又是制备三唑基香豆素类光亮剂的起始物质。