2-benzyl-5-bromopyridazin-3(2H)-one | 912820-23-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二嗪类
• 英文名称: 2-benzyl-5-bromopyridazin-3(2H)-one
• 英文别名: 2-benzyl-5-bromopyridazin-3-one
• CAS: 912820-23-6
• 化学式: C₁₁H₉BrN₂O
• 分子量: 265.109
• InChiKey: QSHVRNFFEITIAD-UHFFFAOYSA-N

物化性质

• 熔点：
  98-99 °C
• 沸点：
  354.3±52.0 °C(Predicted)
• 密度：
  1.48±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.09
• 拓扑面积：
  32.7
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2-benzyl-5-bromopyridazin-3(2H)-one 在 sodium azide 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 以76%的产率得到5-azido-2-benzylpyridazin-3(2H)-one
  参考文献：
  名称：

  Targeting the Warburg Effect in cancer; relationships for 2-arylpyridazinones as inhibitors of the key glycolytic enzyme 6-phosphofructo-2-kinase/2,6-bisphosphatase 3 (PFKFB3)

  摘要：

  High-throughput screening of a small-molecule library identified a 5-triazolo-2-arylpyridazinone as a novel inhibitor of the important glycolytic enzyme 6-phosphofructo-2-kinase/2,6-bisphosphatase 3 (PFKFB3). Such inhibitors are of interest due to PFKFB3's control of the important glycolytic pathway used by cancer cells to generate ATP. A series of analogues was synthesized to study structure-activity relationships key to enzyme inhibition. Changes to the triazolo or pyridazinone rings were not favoured, but limited-size substitutions on the aryl ring provided modest increases in potency against the enzyme. Selected analogues and literature-described inhibitors were evaluated for their ability to suppress the glycolytic pathway, as detected by a decrease in lactate production, but none of these compounds demonstrated such suppression at non-cytotoxic concentrations. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2013.12.041
• 作为产物：
  描述：

  2-苄基-4,5-二溴吡嗪-3(2H)-酮 在 正丁基氯化镁 、 水 作用下， 以 四氢呋喃 为溶剂， 反应 0.05h， 以55%的产率得到2-benzyl-5-bromopyridazin-3(2H)-one
  参考文献：
  名称：

  亲核性氢取代（S N H）合成功能化哒嗪-3（2 H）-ones。

  摘要：

  2-苄基-5-卤代哒嗪-3（2 H）-ones（3）与Grignard试剂反应，然后用亲电试剂猝灭，意外地得到4,5-二取代哒嗪-3（2 H）-ones代替5-取代哒嗪-3（2 H）-ones。这些反应代表，其中所述阴离子σ电影取代第一实施例ħ -adduct通过亲电（不同于质子）消除猝灭之前发生。对反应机理的深入了解导致了2-苄基哒嗪-3（2 H）-one（7）和2-苄基-6-氯哒嗪-3（2 H）-one（9）转化为相应的C-4烷基和芳基衍生物（当Br 2被用作亲电试剂时）。

  DOI：

  10.1021/ol102703w

文献信息

• [EN] COMPOUND USED AS BCR-ABL INHIBITOR<br/>[FR] COMPOSÉ UTILISÉ COMME INHIBITEUR DE BCR-ABL<br/>[ZH] 作为BCR-ABL抑制剂的化合物
  申请人：CHIA TAI TIANQING PHARMACEUTICAL GROUP CO LTD

  公开号：WO2022247919A1

  公开（公告）日：2022-12-01

  提供了一种作为BCR-ABL抑制剂的化合物，即式(I)化合物，或其药学上可接受的盐、其制备方法、含有该化合物的药物组合物，并涉及其在制备治疗BCR-ABL相关疾病的药物中的用途。
• Synthesis of Functionalized Pyridazin-3(2<i>H</i>)-ones via Bromine−Magnesium Exchange on Bromopyridazin-3(2<i>H</i>)-ones
  作者：Oxana Ryabtsova、Tom Verhelst、Mattijs Baeten、Christophe M. L. Vande Velde、Bert U. W. Maes

  DOI：10.1021/jo9020985

  日期：2009.12.18

  The potential of halogen-magnesium exchange reactions, followed by quenching with elect rophiles, for the functionalization of the pyridazin-3(2H)-one core was investigated. 2-Benzyl-4-bromo-5-methoxy-(1), 2-benzyl-5-bromo-4-methoxy- (4), and 2-benzyl-4,5-dibromopyridazin-3(2H)-one (10) were selected as readily available model substrates. While I and 10 gave exclusively C-4 metalation, a tandem reaction involving nucleophilic substitution via addition elimination and bromine-magnesium exchange was observed with 4.
• Synthesis of Functionalized Pyridazin-3(2<i>H</i>)-ones via Selective Bromine–Magnesium Exchange and Lactam Directed Ortho C–H Magnesiation
  作者：Tom Verhelst、Jens Maes、Zuming Liu、Sergey Sergeyev、Bert U. W. Maes

  DOI：10.1021/jo201009m

  日期：2011.8.19

  Selective bromine magnesium exchange on 2-benzyl-5-bromo-4-methoxypyridazin-3(2H)-one could be achieved when MesMgBr was used as reagent. With more nucleophilic RMgCl species (R = Bu, i-Pr, Ph) both nucleophilic addition-elimination at C-4 and bromine-magnesium exchange at C-5 occurred. In 2-benzyl-5-bromopyridazin-3(2H)-one, which does not contain a substituent at C-4, addition could not be suppressed. Less nucleophilic Mg amides (TMPMgCl center dot LiCl) allowed regioselective C-H magnesiation at the C-4 position in such substrates, as exemplified for 2-benzyl-5-chloro- and 2-benzyl-6-chloropyridazin-3(2H)-one. Quenching of the magnesiated pyridazinones with electrophiles gives access to a variety of hitherto unknown pyridazin-3(2H)-one derivatives.
• Targeting the Warburg Effect in cancer; relationships for 2-arylpyridazinones as inhibitors of the key glycolytic enzyme 6-phosphofructo-2-kinase/2,6-bisphosphatase 3 (PFKFB3)
  作者：Darby G. Brooke、Ellen M. van Dam、Colin K.W. Watts、Amanda Khoury、Marie A. Dziadek、Hilary Brooks、Lisa-Jane K. Graham、Jack U. Flanagan、William A. Denny

  DOI：10.1016/j.bmc.2013.12.041

  日期：2014.2

  High-throughput screening of a small-molecule library identified a 5-triazolo-2-arylpyridazinone as a novel inhibitor of the important glycolytic enzyme 6-phosphofructo-2-kinase/2,6-bisphosphatase 3 (PFKFB3). Such inhibitors are of interest due to PFKFB3's control of the important glycolytic pathway used by cancer cells to generate ATP. A series of analogues was synthesized to study structure-activity relationships key to enzyme inhibition. Changes to the triazolo or pyridazinone rings were not favoured, but limited-size substitutions on the aryl ring provided modest increases in potency against the enzyme. Selected analogues and literature-described inhibitors were evaluated for their ability to suppress the glycolytic pathway, as detected by a decrease in lactate production, but none of these compounds demonstrated such suppression at non-cytotoxic concentrations. (C) 2013 Elsevier Ltd. All rights reserved.
• Synthesis of Functionalized Pyridazin-3(2<i>H</i>)-ones via Nucleophilic Substitution of Hydrogen (S_NH)
  作者：Tom Verhelst、Stefan Verbeeck、Oxana Ryabtsova、Stefaan Depraetere、Bert U. W. Maes

  DOI：10.1021/ol102703w

  日期：2011.1.21

  Reaction of 2-benzyl-5-halopyridazin-3(2H)-ones (3) with Grignard reagents followed by quenching with electrophiles unexpectedly yielded 4,5-disubstituted pyridazin-3(2H)-ones instead of 5-substituted pyridazin-3(2H)-ones. These reactions represent the first examples of cine substitution in which the anionic σH-adduct is quenched by electrophiles (other than a proton) before elimination takes place

  2-苄基-5-卤代哒嗪-3（2 H）-ones（3）与Grignard试剂反应，然后用亲电试剂猝灭，意外地得到4,5-二取代哒嗪-3（2 H）-ones代替5-取代哒嗪-3（2 H）-ones。这些反应代表，其中所述阴离子σ电影取代第一实施例ħ -adduct通过亲电（不同于质子）消除猝灭之前发生。对反应机理的深入了解导致了2-苄基哒嗪-3（2 H）-one（7）和2-苄基-6-氯哒嗪-3（2 H）-one（9）转化为相应的C-4烷基和芳基衍生物（当Br 2被用作亲电试剂时）。