8-bromo-5,6-difluoroquinoline | 225366-92-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 喹啉及其衍生物
• 英文名称: 8-bromo-5,6-difluoroquinoline
• CAS: 225366-92-7
• 化学式: C₉H₄BrF₂N
• 分子量: 244.038
• InChiKey: KUZBEYXULBIVJO-UHFFFAOYSA-N

物化性质

• 沸点：
  295.3±35.0 °C(Predicted)
• 密度：
  1.726±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  13
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  12.9
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  8-bromo-5,6-difluoroquinoline 在 palladium on activated charcoal sodium hydroxide 、 氢气 作用下， 以 甲醇 为溶剂， 反应 1.0h， 以93%的产率得到5,6-Difluoroquinoline
  参考文献：
  名称：

  Effects of oligofluorine substitution on the mutagenicity of quinoline: a study with twelve fluoroquinoline derivatives

  摘要：

  A total of 12 variously fluorinated derivatives of quinoline (Q) were tested for their mutagenicity in Salmonella typhimurium TA100 in the presence of S9 mix to investigate the structure-mutagenicity relationship in oligofluorinated quinolines. Nine of them, 3,7-di-, 5,6-di-, 6,7-di-, 6,8-di-, 7,8-di-, 3,5,7-tri-, 5,6,8-tri-, 6,7,8-tri-, and 5,6,7,8-tetrafluoroquinolines (FQs), were newly synthesized for this purpose. Those fluorinated at position 3 were all non-mutagenic. Mutagenicity was enhanced by fluorine-substitution at position 5 or 7, but not in 3-FQs (i.e., 3,5-di-, 3,7-di-, and 3,5,7-triFQs). Some of the 6-fluorinated derivatives showed less maximum induced-revertants with more mutagenic potencies in terms of induced-revertants per dose than quinoline. No marked change occurred by fluorine-substitution at position 8. These results show that the effect of di- and trifluoro-substitution on mutagenicity is generally additive, while that of tetrafluorination approaches the deactivating effect of perfluorination. Our study suggests that 3-fluorine-substitution in the pyridine moiety may be a useful means of antimutagenic structural modification in pyridine-fused aromatic chemicals for medicinal and agricultural use. (C) 1999 Elsevier Science B.V. All rights reserved.

  DOI：

  10.1016/s1383-5718(98)00188-0
• 作为产物：
  描述：

  3,4-二氟苯胺 在 硫酸 、 溴 、 sodium 3-nitrobenzenesulfonate 作用下， 以 甲醇 为溶剂， 反应 8.0h， 生成 8-bromo-5,6-difluoroquinoline
  参考文献：
  名称：

  Effects of oligofluorine substitution on the mutagenicity of quinoline: a study with twelve fluoroquinoline derivatives

  摘要：

  A total of 12 variously fluorinated derivatives of quinoline (Q) were tested for their mutagenicity in Salmonella typhimurium TA100 in the presence of S9 mix to investigate the structure-mutagenicity relationship in oligofluorinated quinolines. Nine of them, 3,7-di-, 5,6-di-, 6,7-di-, 6,8-di-, 7,8-di-, 3,5,7-tri-, 5,6,8-tri-, 6,7,8-tri-, and 5,6,7,8-tetrafluoroquinolines (FQs), were newly synthesized for this purpose. Those fluorinated at position 3 were all non-mutagenic. Mutagenicity was enhanced by fluorine-substitution at position 5 or 7, but not in 3-FQs (i.e., 3,5-di-, 3,7-di-, and 3,5,7-triFQs). Some of the 6-fluorinated derivatives showed less maximum induced-revertants with more mutagenic potencies in terms of induced-revertants per dose than quinoline. No marked change occurred by fluorine-substitution at position 8. These results show that the effect of di- and trifluoro-substitution on mutagenicity is generally additive, while that of tetrafluorination approaches the deactivating effect of perfluorination. Our study suggests that 3-fluorine-substitution in the pyridine moiety may be a useful means of antimutagenic structural modification in pyridine-fused aromatic chemicals for medicinal and agricultural use. (C) 1999 Elsevier Science B.V. All rights reserved.

  DOI：

  10.1016/s1383-5718(98)00188-0

文献信息

• Dynamic Kinetic Resolution of 2‐(Quinolin‐8‐yl)Benzaldehydes: Atroposelective Iridium‐Catalyzed Transfer Hydrogenative Allylation
  作者：José A. Carmona、Patricia Rodríguez‐Salamanca、Rosario Fernández、José M. Lassaletta、Valentín Hornillos

  DOI：10.1002/anie.202306981

  日期：2023.8.28

  An atroposelective Ir‐catalyzed dynamic kinetic resolution (DKR) of 2‐(quinolin‐8‐yl)benzaldehydes/1‐naphthaldehydes by transfer hydrogenative coupling of allyl acetate is disclosed. The allylation reaction takes place with simultaneous installation of central and axial chirality, reaching high diastereoselectivities and excellent enantiomeric excesses when ortho‐cyclometalated iridium‐DM‐BINAP is used as the catalyst. The racemization of the substrates occurs through a designed transient Lewis acid‐base interaction between the quinoline nitrogen atom and the aldehyde carbonyl group.

  摘要 通过乙酸烯丙酯的转移氢化偶联，公开了一种由铱催化的 2-(喹啉-8-基)苯甲醛/1-萘甲醛的非选择性动态动力学解析（DKR）。烯丙基化反应同时具有中心和轴向手性，当使用正交环甲基化铱-DM-BINAP 作为催化剂时，可达到很高的非对映选择性和优异的对映体过量。底物的外消旋化是通过喹啉氮原子和醛羰基之间设计的瞬时路易斯酸碱作用实现的。
• NITROGENOUS HETEROCYCLIC DERIVATIVES AND THEIR APPLICATION IN THE TREATMENT OF TISSUE FIBROSIS
  申请人：Sunshine Lake Pharma Co., Ltd.

  公开号：EP3083584B1

  公开（公告）日：2018-02-21
• NITROGENOUS HETEROCYCLIC DERIVATIVES AND THEIR APPLICATION IN DRUGS
  申请人：SUNSHINE LAKE PHARMA CO., LTD.

  公开号：US20160355501A1

  公开（公告）日：2016-12-08

  The present invention relates to the field of medicine, provided herein are novel nitrogenous heterocyclic compounds, their preparation methods and their uses as drugs, especially for treatment and prevention of tissue fibrosis. Also provided herein are pharmaceutically acceptable compositions comprising the nitrogenous heterocyclic compounds and the uses of the compositions in the treatment of human or animal tissue fibrosis, especially for human or animal renal interstitial fibrosis, glomerular sclerosis, liver fibrosis, pulmonary fibrosis, IPF, peritoneal fibrosis, myocardial fibrosis, dermatofibrosis, postsurgical adhesion, benign prostatic hyperplasia, skeletal muscle fibrosis, scleroderma, multiple sclerosis, pancreatic fibrosis, cirrhosis, myosarcoma, neurofibroma, pulmonary interstitial fibrosis, diabetic nephropathy, alzheimer disease or vascular fibrosis.
• US9902712B2
  申请人：——

  公开号：US9902712B2

  公开（公告）日：2018-02-27
• Effects of oligofluorine substitution on the mutagenicity of quinoline: a study with twelve fluoroquinoline derivatives
  作者：Taka-aki Kato、Ken-ichi Saeki、Yutaka Kawazoe、Atsushi Hakura

  DOI：10.1016/s1383-5718(98)00188-0

  日期：1999.2

  A total of 12 variously fluorinated derivatives of quinoline (Q) were tested for their mutagenicity in Salmonella typhimurium TA100 in the presence of S9 mix to investigate the structure-mutagenicity relationship in oligofluorinated quinolines. Nine of them, 3,7-di-, 5,6-di-, 6,7-di-, 6,8-di-, 7,8-di-, 3,5,7-tri-, 5,6,8-tri-, 6,7,8-tri-, and 5,6,7,8-tetrafluoroquinolines (FQs), were newly synthesized for this purpose. Those fluorinated at position 3 were all non-mutagenic. Mutagenicity was enhanced by fluorine-substitution at position 5 or 7, but not in 3-FQs (i.e., 3,5-di-, 3,7-di-, and 3,5,7-triFQs). Some of the 6-fluorinated derivatives showed less maximum induced-revertants with more mutagenic potencies in terms of induced-revertants per dose than quinoline. No marked change occurred by fluorine-substitution at position 8. These results show that the effect of di- and trifluoro-substitution on mutagenicity is generally additive, while that of tetrafluorination approaches the deactivating effect of perfluorination. Our study suggests that 3-fluorine-substitution in the pyridine moiety may be a useful means of antimutagenic structural modification in pyridine-fused aromatic chemicals for medicinal and agricultural use. (C) 1999 Elsevier Science B.V. All rights reserved.