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CN103664803A 2,3,5,6-四甲基吡嗪新的合成方法 无效 - 撤回

  • 专利标题： 2,3,5,6-四甲基吡嗪新的合成方法
  • 专利标题（英）： Novel synthesis method of 2, 3, 5, 6-tetramethylpyrazine
  • 申请号： CN201210341607.7
    申请日： 2012-09-17
  • 公开(公告)号： CN103664803A
    公开(公告)日： 2014-03-26
  • 发明人: 王天桃 , 莫凯杰
  • 申请人： 王天桃 , 莫凯杰
  • 申请人地址： 江苏省南京市中山东路293号
  • 专利权人： 王天桃,莫凯杰
  • 当前专利权人： 王天桃,莫凯杰
  • 当前专利权人地址： 江苏省南京市中山东路293号
  • 主分类号： C07D241/12
  • IPC分类号： C07D241/12
2,3,5,6-四甲基吡嗪新的合成方法
摘要：
本发明公开了一种2，3，5，6-四甲基吡嗪新的合成方法，属于香料、医药和农药合成技术领域。本反应是加成、重排、缩合、氧化均在反应升华路线装置中进行，通过水气蒸馏得到合格产品。本发明简化了工艺步骤，充分利用物质资源，并具有能耗低，产品收率高，有利用环境保护，生产成本低，方法操作简捷，利于工业化大生产。本发明可广泛应用于工业生产2，3，5，6-四甲基吡嗪。采用本发明工艺的新合成，生产2，3，5，6-四甲基吡嗪产品，可广泛用作香料、食品添加剂、光敏剂、医药和农药等。
摘要（英）：

The invention discloses a novel synthesis method of 2, 3, 5, 6-tetramethylpyrazine and belongs to the technical field of synthesis of perfumes, medicines and pesticides. The reaction comprises addition, rearrangement, condensation and oxidation, which are performed in a reaction and sublimation route device, and a qualified product is obtained by steam distillation. According to the synthesis method disclosed by the invention, the process steps are simplified, material resources are fully utilized, and the synthesis method further has the advantages of low energy consumption, high product yield, environmental friendliness, low production cost, and simplicity and rapidness in operation, and is further conductive to industrial mass production. The synthesis method disclosed by the invention can be widely applied to industrial production of 2, 3, 5, 6-tetramethylpyrazine. By adopting the novel synthesis process disclosed by the invention, the 2, 3, 5, 6-tetramethylpyrazine product can be produced, and the 2, 3, 5, 6-tetramethylpyrazine product can be widely used as the perfume, a food additive, a photosensitizer, the medicine, the pesticide and the like.

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