A process for preparing theobromine by methylating 3-methyl xanthine disodium salt comprises reacting 3-methyl xanthine disodium salt with dimethyl sulfate by using acetone as solvent in the presence of sodium carbonate and acidifying. The present application also provides a process for refining theobromine which comprises dissolving coarse theobromine in liquid alkaline solution, decolorizing, filtering, adding reducing agent in filtrate, and acidifying at 60-80 °C until pH is 5-6, filtering, and drying to obtain theobromine.
一种制备
可可碱的方法是通过使用
丙酮作为溶剂,在
碳酸钠存在下,将3-甲基
咖啡因二钠盐与
硫酸二甲酯反应,并在酸化条件下进行。本申请还提供了一种精制
可可碱的方法,包括将粗
可可碱溶解在液体碱性溶液中,脱色,过滤,向滤液中加入还原剂,并在60-80°C下酸化直至pH为5-6,过滤,并干燥以获得
可可碱。