4,4-dimethyl-2-phenyl-4H-benzo[d][1,3]thiazine | 1321594-68-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并噻嗪类
• 英文名称: 4,4-dimethyl-2-phenyl-4H-benzo[d][1,3]thiazine
• 英文别名: 4,4-dimethyl-2-phenyl-4H-3,1-benzothiazine；4,4-Dimethyl-2-phenyl-3,1-benzothiazine；4,4-dimethyl-2-phenyl-3,1-benzothiazine
• CAS: 1321594-68-6
• 化学式: C₁₆H₁₅NS
• 分子量: 253.368
• InChiKey: ROBFRFHTKBQCKM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  18
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.19
• 拓扑面积：
  37.7
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  苯酰胺,N-[2-(1-甲基乙烯基)苯基]- 在 劳森试剂 作用下， 以 甲苯 为溶剂， 反应 12.0h， 以89%的产率得到4,4-dimethyl-2-phenyl-4H-benzo[d][1,3]thiazine
  参考文献：
  名称：

  Synthesis of 3,1-Benzothiazines from 2-Alkenyl- and 2-Alkynylanilides and Lawesson Reagent

  摘要：

  Reaction of 2-vinylacetanilide with P4S10 gave 2-vinylthioacetanilide, whereas reaction of 2-vinylacetanilide with Lawesson reagent (LR) afforded 2,4-dimethyl-4H-3,1-benzothiazine in 62% yield. Reaction of 2-alkynylanilides with LR gave 4-exomethylene-4H-3,1-benzothiazines in good yields.

  DOI：

  10.3987/com-11-12180

文献信息

• A metal- and base-free domino protocol for the synthesis of 1,3-benzoselenazines, 1,3-benzothiazines and related scaffolds
  作者：V. P. Rama Kishore Putta、Raghuram Gujjarappa、Ujjawal Tyagi、Prasad P. Pujar、Chandi C. Malakar

  DOI：10.1039/c8ob03058h

  日期：——

  Efficient and operationally simple protocols have been demonstrated for the synthesis of the title compounds using easily available starting materials under mild conditions, giving a broad range of rarely reported molecules in excellent yields.

  通过使用易得的起始材料，在温和条件下演示了合成标题化合物的高效和操作简单的协议，产率优秀，得到了广泛的罕见分子。
• Synthesis of 3,1-Benzothiazines from 2-Alkenyl- and 2-Alkynylanilides and Lawesson Reagent
  作者：Kentaro Okuma、Saori Ozaki、Noriyoshi Nagahora、Kosei Shioji

  DOI：10.3987/com-11-12180

  日期：——

  Reaction of 2-vinylacetanilide with P4S10 gave 2-vinylthioacetanilide, whereas reaction of 2-vinylacetanilide with Lawesson reagent (LR) afforded 2,4-dimethyl-4H-3,1-benzothiazine in 62% yield. Reaction of 2-alkynylanilides with LR gave 4-exomethylene-4H-3,1-benzothiazines in good yields.