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[摘要]:N-(4-Arylazobenzoyl)-1H-benzotriazoles react with hydroxyterpenes, sugars, and steroids in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) at room temperature in tetrahydrofuran to afford azo dye labeled terpenes, sugars, and steroids (45-82% yield). |
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