8-methyl-2-methylthiothiazolo<4,5-b><1,6>naphthyridine | 147293-34-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氮杂萘
• 英文名称: 8-methyl-2-methylthiothiazolo<4,5-b><1,6>naphthyridine
• 英文别名: 8-methyl-2-methylsulfanyl-[1,3]thiazolo[4,5-b][1,6]naphthyridine
• CAS: 147293-34-3
• 化学式: C₁₁H₉N₃S₂
• 分子量: 247.345
• InChiKey: UWLVTBLBIITELS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.27
• 重原子数：
  16.0
• 可旋转键数：
  1.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  38.67
• 氢给体数：
  0.0
• 氢受体数：
  5.0

反应信息

• 作为反应物：
  描述：

  8-methyl-2-methylthiothiazolo<4,5-b><1,6>naphthyridine 在 sodium methylate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 7.0h， 以84%的产率得到8-methylthiazolo<4,5-b><1,6>naphthyridin-2(3H)-one
  参考文献：
  名称：

  An Efficient and Novel Synthesis of Fused Thiazol-2(3H)-ones

  摘要：

  Reaction of o-bromo aromatic amines (2, 4, 7, 10, 15) with ethyl potassium xanthate gave the corresponding fused thiazol-2(3H)-thiones (16, 19, 22) which in turn were first alkylated with methyl iodide and then treated with sodium methoxide to produce fused thiazol-2(3H)-ones (18, 21, 24). Treatment of 4-(4-pyridinyl)-benzenamine dihydrobromide (1) with DMSO gave 2-bromo-4-(4-pyridinyl)benzenamine (2). Reduction of 4-(4-bromo-3-nitrophenyl)-pyridine (3) with stannous chloride gave 2-bromo-5-(4-pyridinyl)-benzenamine (4). Treatment of 5-bromo-2-methyl[3,4'-bipyridin]-6(1H)-one (5) with phosphorous oxychloride and ammonia sequentially yielded amino compound (7). Hofmann reaction of 2-chloro-6-methyl-[3,4'-bipyridine]-3-carboxamide resulted in amino compound (10). 5-Acyl-6-methylpyridin-2(1H)-ones (11) were converted to 3-bromo-1,6-naphthyridin-2-amines (15) via a four-step sequence.

  DOI：

  10.3987/com-92-6193
• 作为产物：
  描述：

  5-乙酰基-3-溴-6-甲基-2(1H)-吡啶酮 在 N-甲基吡咯烷酮 、 ammonium acetate 、 氨 、 potassium carbonate 、 三氯氧磷 作用下， 以 1,4-二氧六环 、 氯仿 、 N,N-二甲基甲酰胺 为溶剂， 反应 49.5h， 生成 8-methyl-2-methylthiothiazolo<4,5-b><1,6>naphthyridine
  参考文献：
  名称：

  An Efficient and Novel Synthesis of Fused Thiazol-2(3H)-ones

  摘要：

  Reaction of o-bromo aromatic amines (2, 4, 7, 10, 15) with ethyl potassium xanthate gave the corresponding fused thiazol-2(3H)-thiones (16, 19, 22) which in turn were first alkylated with methyl iodide and then treated with sodium methoxide to produce fused thiazol-2(3H)-ones (18, 21, 24). Treatment of 4-(4-pyridinyl)-benzenamine dihydrobromide (1) with DMSO gave 2-bromo-4-(4-pyridinyl)benzenamine (2). Reduction of 4-(4-bromo-3-nitrophenyl)-pyridine (3) with stannous chloride gave 2-bromo-5-(4-pyridinyl)-benzenamine (4). Treatment of 5-bromo-2-methyl[3,4'-bipyridin]-6(1H)-one (5) with phosphorous oxychloride and ammonia sequentially yielded amino compound (7). Hofmann reaction of 2-chloro-6-methyl-[3,4'-bipyridine]-3-carboxamide resulted in amino compound (10). 5-Acyl-6-methylpyridin-2(1H)-ones (11) were converted to 3-bromo-1,6-naphthyridin-2-amines (15) via a four-step sequence.

  DOI：

  10.3987/com-92-6193