| 摘要 |
2-Stilbenyl-1,2,3-triazoles (I) in which A is unsubstituted or non chromophorically substd. benzene, naphthalene or acenaphthene ring; the benzene rings B and C are unsubstituted or non chromophorically substd.; and the mol. contains >=1 sulpho gp., or salts of these, are made by reacting a 2-tolyl-1,2,3l triazole cpd. (II) or a salt of this (if II contains a salt forming gp.), with an anil (III) in which Ar is an opt. substd. aromatic gp., or a salt of this (if III contains a salt forming gp).The reaction is carried out in the presence out in the presence of a strongly alkaline cpd. in a highly polar, neutral to basic organic solvent, or a mixt. of these.The process gives good yields of (I), which have excellent optical brightening properties, esp. for use in soaps and washing powders.
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