| 摘要 |
The process for the preparation of 2,4-di-(C1-C4)-alkoxy-1,3,5-triazinyl-6-pyrenes by reacting 2,4-dichloro-1,3,5-triazinyl-6-pyrene with alkali metal (C1-C4)-alcoholates is carried out in a mixture of a lower alkanol and an aprotic, dipolar organic solvent. The product, which is of importance as an optical brightener, is obtained in an improved state of purity as a result of using this mixture of solvents, and higher degrees of whiteness are obtained thereby.
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