2-chloro-6-ethyl-5-fluoro-4-hydroxypyrimidine ammonium salt | 188416-27-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二嗪类
• 英文名称: 2-chloro-6-ethyl-5-fluoro-4-hydroxypyrimidine ammonium salt
• 英文别名: ammonia; 2-chloro-6-ethyl-5-fluoro-1H-pyrimidin-4-one；azane;2-chloro-4-ethyl-5-fluoro-1H-pyrimidin-6-one
• CAS: 188416-27-5
• 化学式: C₆H₆ClFN₂O*H₃N
• 分子量: 193.608
• InChiKey: SRHMZIBWCLNYMC-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.29
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  42.5
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  2-chloro-6-ethyl-5-fluoro-4-hydroxypyrimidine ammonium salt 在 5%-palladium/activated carbon 、 氢气 、 三乙胺 、 三氯氧磷 作用下， 以 乙醇 、 二氯甲烷 为溶剂， 40.0~50.0 ℃ 、344.75 kPa 条件下， 反应 8.0h， 生成 4-氯-6-乙基-5-氟嘧啶
  参考文献：
  名称：

  Process Development of Voriconazole:  A Novel Broad-Spectrum Triazole Antifungal Agent

  摘要：

  In the synthesis of (2R,3S)-2-(2,4-difluorophenyl)-3-(5-fluoro-4-pyrimidinyl)-1-(1H-1,2,4-triazol-1-yl)-2-butanol (voriconazole), the relative stereochemistry is set in the addition of a 4-(1-metalloethyl)-5-fluoropyrimidine derivative to 1-(2,4-difluorophenyl)-2-(1H-1 ,2,4-triazol-1-yl)-1-ethanone, The diastereo-control of this reaction has been examined by variation of pyrimidine substitution pattern and by changes in the metalation and reaction conditions. Excellent diastereoselection (12: ii is obtained using an organozinc derivative of 6-(1-bromoethyl)-4-chloro-5-fluoropyriminidine. lifter removal cf the chlorine from the pyrimidine ring? the absolute stereochemistry of voriconazole is established via a diastereomeric salt resolution process using (1R)-10 camphorsulfonic acid. Synthetic routes to the pyrimidine partner have also been evaluated. The initial six-step development route from 5-fluorouracil has been superseded by a four-step synthesis involving fluorination of methyl 3-oxopentanoate and cyclisation with formamidine acetate.

  DOI：

  10.1021/op0000879
• 作为产物：
  描述：

  2,4-二氯-6-乙基-5-氟嘧啶 在 盐酸 、 sodium hydroxide 、 氨 作用下， 以 二氯甲烷 、 水 为溶剂， 生成 2-chloro-6-ethyl-5-fluoro-4-hydroxypyrimidine ammonium salt
  参考文献：
  名称：

  Preparation of triazoles by organometallic addition to ketones and intermediates therefor

  摘要：

  该方法用于制备以下化合物：或其酸加合物或碱盐，其中R是苯基，可以选择地被1至3个取代基取代，每个取代基独立地选自卤素和三氟甲基；R1是C1-C6烷基；“Het”是嘧啶基，可以选择地被1至3个取代基取代，每个取代基独立地选自C1-C4烷基、C1-C4烷氧基、卤素、氧代基、苄基和苄氧基，包括将以下化合物与以下化合物反应：其中X是氯、溴或碘，在锌的存在下进行反应；至少使用碘或路易斯酸；和无水有机溶剂：可选择进一步将所得化合物与酸或碱反应，形成相应的酸加合物或碱盐。

  公开号：

  US06586594B1

文献信息

• Org. Process Res. Dev.​ 2001, 5, 28-36
  作者：

  DOI：——

  日期：——
• Process Development of Voriconazole:  A Novel Broad-Spectrum Triazole Antifungal Agent
  作者：Mike Butters、Julie Ebbs、Stuart P. Green、Julie MacRae、Matthew C. Morland、Charles W. Murtiashaw、Alan J. Pettman

  DOI：10.1021/op0000879

  日期：2001.1.1

  In the synthesis of (2R,3S)-2-(2,4-difluorophenyl)-3-(5-fluoro-4-pyrimidinyl)-1-(1H-1,2,4-triazol-1-yl)-2-butanol (voriconazole), the relative stereochemistry is set in the addition of a 4-(1-metalloethyl)-5-fluoropyrimidine derivative to 1-(2,4-difluorophenyl)-2-(1H-1 ,2,4-triazol-1-yl)-1-ethanone, The diastereo-control of this reaction has been examined by variation of pyrimidine substitution pattern and by changes in the metalation and reaction conditions. Excellent diastereoselection (12: ii is obtained using an organozinc derivative of 6-(1-bromoethyl)-4-chloro-5-fluoropyriminidine. lifter removal cf the chlorine from the pyrimidine ring? the absolute stereochemistry of voriconazole is established via a diastereomeric salt resolution process using (1R)-10 camphorsulfonic acid. Synthetic routes to the pyrimidine partner have also been evaluated. The initial six-step development route from 5-fluorouracil has been superseded by a four-step synthesis involving fluorination of methyl 3-oxopentanoate and cyclisation with formamidine acetate.
• Preparation of triazoles by organometallic addition to ketones and intermediates therefor
  申请人：Pfizer, Inc.

  公开号：US06586594B1

  公开（公告）日：2003-07-01

  A process for the preparation of a compound of the formula: or an acid addition or base salt thereof, wherein R is phenyl optionally substituted by 1 to 3 substituents each independently selected from halo and trifluoromethyl; R1 is C1-C6 alkyl; and “Het” is pyrimidinyl optionally substituted by 1 to 3 substituents each independently selected from C1-C4 alkyl, C1-C4 alkoxy, halo, oxo, benzyl and benzyloxy, comprising reacting a compound of the formula: with a compound of the formula wherein X is chloro, bromo or iodo, the reaction taking place in the presence of zinc; at least one of iodine or a Lewis acid; and an aprotic organic solvent: optionally further reacting the resulting compound with an acid or base to form the corresponding acid addition or base salt thereof.

  该方法用于制备以下化合物：或其酸加合物或碱盐，其中R是苯基，可以选择地被1至3个取代基取代，每个取代基独立地选自卤素和三氟甲基；R1是C1-C6烷基；“Het”是嘧啶基，可以选择地被1至3个取代基取代，每个取代基独立地选自C1-C4烷基、C1-C4烷氧基、卤素、氧代基、苄基和苄氧基，包括将以下化合物与以下化合物反应：其中X是氯、溴或碘，在锌的存在下进行反应；至少使用碘或路易斯酸；和无水有机溶剂：可选择进一步将所得化合物与酸或碱反应，形成相应的酸加合物或碱盐。