5-bromo-6-chloro-2-methyl-3,4'-bipyridine | 147293-20-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: 5-bromo-6-chloro-2-methyl-3,4'-bipyridine
• 英文别名: 3-Bromo-2-chloro-6-methyl-5-pyridin-4-ylpyridine
• CAS: 147293-20-7
• 化学式: C₁₁H₈BrClN₂
• 分子量: 283.555
• InChiKey: DPFVIBJSKUEUSM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.5
• 重原子数：
  15
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.09
• 拓扑面积：
  25.8
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  5-bromo-6-chloro-2-methyl-3,4'-bipyridine 在 N-甲基吡咯烷酮 、 ammonium hydroxide 、 sodium methylate 、 potassium carbonate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 38.5h， 生成 5-methyl-6-(4-pyridinyl)thiazolo-<4,5-b>pyridin-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-bromo-2-methyl<3,4'-bipyridin>-6(1H)-one 在 三氯氧磷 作用下， 反应 9.0h， 以71%的产率得到5-bromo-6-chloro-2-methyl-3,4'-bipyridine
  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

文献信息

• Pyridine derivatives, process for their preparation and composition containing them
  申请人：STERLING DRUG INC.

  公开号：EP0109027A1

  公开（公告）日：1984-05-23

  2-(R,O)-3-Q-5-PY-6-R-pyridine (I) or pharmaceutically acceptable acid-addition salts thereof are useful cardiotonics, where R, is methyl or ethyl, R is hydrogen or lower-alkyl, PY is 4(or 3)-pyridinyl or 4(or 3)-pyridinyl having one or two lower-alkyl substituents, and Q is hydrogen, chloro or COOR' where R' is lower-alkyl, or 0 is cyano only when R is hydrogen. The preparation of I and their cardiotonic use are shown.

  2-(R,O)-3-Q-5-PY-6-R-吡啶（I）或其药学上可接受的酸加成盐是有用的强心剂，其中 R 是甲基或乙基，R 是氢或低级烷基，PY 是 4（或 3）-吡啶基或具有一个或两个低级烷基取代基的 4（或 3）-吡啶基，Q 是氢、氯或 COOR'（其中 R' 是低级烷基），或 0 是氰基（仅当 R 是氢时）。I 的制备方法及其强心剂用途如图所示。
• US4331672A
  申请人：——

  公开号：US4331672A

  公开（公告）日：1982-05-25
• US4351941A
  申请人：——

  公开号：US4351941A

  公开（公告）日：1982-09-28
• US4463008A
  申请人：——

  公开号：US4463008A

  公开（公告）日：1984-07-31
• An Efficient and Novel Synthesis of Fused Thiazol-2(3H)-ones
  作者：Baldev Singh、Patrick O. Pennock、George Y. Lesher、Edward R. Bacon、Donald F. Page

  DOI：10.3987/com-92-6193

  日期：——

  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.