Emodin was synthesized by demethylation of physcion.Three catalysts of demethylation, AlCl3, H2SO4 and HBr, were compared.

 
  • 摘要目的與方法將大黃素甲醚脫甲基制備大黃素,對以三氯化鋁、濃硫酸、氫溴酸作為催化劑的3種方法進(jìn)行比較。
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