3-acetyl-5-chloro-2-thiophenesulfenamide

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 3-acetyl-5-chloro-2-thiophenesulfenamide
• 英文别名: 1-(2-aminosulfanyl-5-chlorothiophen-3-yl)ethanone
• 化学式: C₆H₆ClNOS₂
• 分子量: 207.705
• InChiKey: DUTAVGHEWUFEPA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  11
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.17
• 拓扑面积：
  96.6
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  3-acetyl-5-chloro-2-thiophenesulfenamide 在 正丁基锂 、 sodium tungstate (VI) dihydrate 、 pyridinium hydrobromide perbromide 、 硫酸 、 双氧水 、 potassium carbonate 、 三乙胺 、 (+)-二异松蒎基氯硼烷 作用下， 以 四氢呋喃 、 正己烷 、 甲基叔丁基醚 、 水 、 二甲基亚砜 、 乙酸乙酯 、 乙腈 为溶剂， 反应 80.5h， 生成 布林佐胺
  参考文献：
  名称：

  Enantioselective Synthesis of Brinzolamide (AL-4862), a New Topical Carbonic Anhydrase Inhibitor. The “DCAT Route” to Thiophenesulfonamides

  摘要：

  A large scale synthesis of the topical carbonic anhydrase inhibitors AL-4623A (13a . HCl) and AL-4862 (13b) from 3-acetyl-2,5-dichlorothiophene ("DCAT", 1) is described, Reaction of 1 with NaSBn gave thioether 2, which was converted via sulfenyl chloride 3 and sulfenamide 5 to sulfonamide 6, Bromination of 6 gave bromo ketone 7, which upon reduction with (+)-B-chlorodiisopinocampheylborane and cyclization of the resulting bromohydrin produced S thieno[3,2-e]-1,2-thiazine 8a (96% ee) after chromatography, Treatment of 8a in THF with n-BuLi at -70 degrees C resulted in Li-Cl exchange, Reaction of the thienyllithium with SO2 and hydroxylamine O-sulfonic acid afforded bis-sulfonamide 11a, Protection of 11a as the acetinidate 12a, followed by tosylation and amination, gave R amine 13a, The synthesis of 13b proceeded via primary sulfonamide 16, which was brominated, reduced, and cyclized to give S thieno[3,2-e]-1,2-thiazine 18 (>98% ee). By virtue of the ionizable NH, 18 was separable from reduction byproducts by base extraction. Alkylation of 18 with 3-bromopropyl methyl ether afforded 8b, which was converted as above, via 11b, to AL-4862 (13b), These procedures provided multihundred gram lots of 13a and 13b.

  DOI：

  10.1021/op9802125
• 作为产物：
  描述：

  2,5-二氯-3-乙酰基噻吩 在 氨 、 氯 、 硫脲 作用下， 以 乙醇 、 水 、 甲苯 为溶剂， 反应 6.42h， 生成 3-acetyl-5-chloro-2-thiophenesulfenamide
  参考文献：
  名称：

  Enantioselective Synthesis of Brinzolamide (AL-4862), a New Topical Carbonic Anhydrase Inhibitor. The “DCAT Route” to Thiophenesulfonamides

  摘要：

  A large scale synthesis of the topical carbonic anhydrase inhibitors AL-4623A (13a . HCl) and AL-4862 (13b) from 3-acetyl-2,5-dichlorothiophene ("DCAT", 1) is described, Reaction of 1 with NaSBn gave thioether 2, which was converted via sulfenyl chloride 3 and sulfenamide 5 to sulfonamide 6, Bromination of 6 gave bromo ketone 7, which upon reduction with (+)-B-chlorodiisopinocampheylborane and cyclization of the resulting bromohydrin produced S thieno[3,2-e]-1,2-thiazine 8a (96% ee) after chromatography, Treatment of 8a in THF with n-BuLi at -70 degrees C resulted in Li-Cl exchange, Reaction of the thienyllithium with SO2 and hydroxylamine O-sulfonic acid afforded bis-sulfonamide 11a, Protection of 11a as the acetinidate 12a, followed by tosylation and amination, gave R amine 13a, The synthesis of 13b proceeded via primary sulfonamide 16, which was brominated, reduced, and cyclized to give S thieno[3,2-e]-1,2-thiazine 18 (>98% ee). By virtue of the ionizable NH, 18 was separable from reduction byproducts by base extraction. Alkylation of 18 with 3-bromopropyl methyl ether afforded 8b, which was converted as above, via 11b, to AL-4862 (13b), These procedures provided multihundred gram lots of 13a and 13b.

  DOI：

  10.1021/op9802125

文献信息

• PROCESS FOR THE PREPARATION OF BRINZOLAMIDE
  申请人：Falchi Alessandro

  公开号：US20110118461A1

  公开（公告）日：2011-05-19

  The present invention relates to a process for the preparation of Brinzolamide, or 2H-thieno[3,2-e]-1, 2-thiazin-6-sulfonamide, 4-(ethyl amino)-3, 4-dihydro-2-(3-methoxypropyl)-, 1,1-dioxide,(4R)- via intermediates 2,3-dihydro-4H-thieno[3,2-e]-1, 2-thiazin-4-ones, 1,1-dioxide. Further objects of the present invention are the intermediates mentioned above and other intermediates of the synthesis.

  本发明涉及一种制备布林唑胺或2H-噻吩[3,2-e]-1,2-噻二嗪-6-磺酰胺，4-(乙基氨基)-3,4-二氢-2-(3-甲氧基丙基)-1,1-二氧化物，(4R)的方法，通过中间体2,3-二氢-4H-噻吩[3,2-e]-1,2-噻二嗪-4-酮，1,1-二氧化物。本发明的进一步目的是上述中间体和合成的其他中间体。
• Preparation of carbonic anhydrase inhibitors
  申请人：ALCON LABORATORIES, INC.

  公开号：EP0617038B1

  公开（公告）日：2001-09-05
• US5344929A
  申请人：——

  公开号：US5344929A

  公开（公告）日：1994-09-06
• US5424448A
  申请人：——

  公开号：US5424448A

  公开（公告）日：1995-06-13
• US5473067A
  申请人：——

  公开号：US5473067A

  公开（公告）日：1995-12-05