2-benzyl-4-bromo-5-methoxypyridazin-3(2H)-one

• 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-4-bromo-5-methoxypyridazin-3(2H)-one
• 英文别名: 2-benzyl-5-methoxy-4-bromo-3(2H)-pyridazinone；2-Benzyl-4-bromo-5-methoxy-3(2H)-pyridazinone；2-benzyl-4-bromo-5-methoxypyridazin-3-one
• 化学式: C₁₂H₁₁BrN₂O₂
• 分子量: 295.136
• InChiKey: FHNGNRASVGTFOY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  17
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.17
• 拓扑面积：
  41.9
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2-benzyl-4-bromo-5-methoxypyridazin-3(2H)-one 在 叔丁基氯化镁 作用下， 以 四氢呋喃 为溶剂， 生成 2-benzyl-5-methoxypyridazin-3(2H)-one
  参考文献：
  名称：

  Synthesis of Functionalized Pyridazin-3(2H)-ones via Bromine−Magnesium Exchange on Bromopyridazin-3(2H)-ones

  摘要：

  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.

  DOI：

  10.1021/jo9020985
• 作为产物：
  描述：

  sodium methylate 、 2-苄基-4,5-二溴吡嗪-3(2H)-酮 以 甲醇 为溶剂， 反应 1.0h， 以97%的产率得到2-benzyl-4-bromo-5-methoxypyridazin-3(2H)-one
  参考文献：
  名称：

  Synthesis of Functionalized Pyridazin-3(2H)-ones via Bromine−Magnesium Exchange on Bromopyridazin-3(2H)-ones

  摘要：

  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.

  DOI：

  10.1021/jo9020985

文献信息

• Prostaglandin endoperoxide H synthase biosynthesis inhibitors
  申请人：Abbott Laboratories

  公开号：US06307047B1

  公开（公告）日：2001-10-23

  The present invention describes pyridazinone compounds of formula I which are cyclooxygenase (COX) inhibitors, and in particular, are selective inhibitors of cyclooxygenase-2 (COX-2). COX-2 is the inducible isoform associated with inflammation, as opposed to the constitutive isoform, cyclooxygenase-1 (COX-1) which is an important “housekeeping” enzyme in many tissues, including the gastrointestinal (GI) tract and the kidneys. The selectivity of these compounds for COX-2 minimizes the unwanted GI and renal side-effects seen with currently marketed non-steroidal anti-inflammatory drugs (NSAIDs).

  该发明描述了式I的吡啶并酮化合物，这些化合物是环氧合酶（COX）抑制剂，特别是选择性地抑制环氧合酶-2（COX-2）。COX-2是与炎症相关的可诱导异构体，与构成性异构体环氧合酶-1（COX-1）相对，后者是许多组织中重要的“基础”酶，包括胃肠道（GI）和肾脏。这些化合物对COX-2的选择性减少了目前市售的非甾体类抗炎药（NSAIDs）所见到的不良胃肠道和肾脏副作用。
• Synthesis of (Hetero)arylated Pyridazin-3(2<i>H</i>)-ones via Negishi Reaction Involving Zincated Pyridazin-3(2<i>H</i>)-ones
  作者：Tom Verhelst、Zuming Liu、Jens Maes、Bert U. W. Maes

  DOI：10.1021/jo201587j

  日期：2011.12.2

  Zincated pyridazin-3(2H)-ones generated via bromine–magnesium exchange followed by transmetalation using ZnCl2 or via lactam-directed ortho C4-H zincation with TMPZnCl·LiCl have been synthesized. These in situ created organometallics can be used in Negishi reactions with iodo(hetero)arenes delivering a new approach toward (hetero)arylpyridazin-3(2H)-ones.

  合成了通过溴-镁交换，然后使用ZnCl 2进行金属转移或通过内酰胺定向的邻位C4-H锌与TMPZnCl·LiCl生成的锌哒嗪3（2 H）- 。这些原位生成的有机金属化合物可用于Negishi与碘（杂）芳烃的反应，从而为（杂）芳基哒嗪3（2 H）-酮提供了一种新方法。
• [EN] PROSTAGLANDIN ENDOPEROXIDE H SYNTHASE BIOSYNTHESIS INHIBITORS<br/>[FR] INHIBITEURS DE LA BIOSYNTHESE DE LA PROSTAGLANDINE ENDOPEROXYDE H SYNTHASE
  申请人：ABBOTT LAB

  公开号：WO2000024719A1

  公开（公告）日：2000-05-04

  The present invention describes pyridazinone compounds of formula (I) which are cyclooxygenase (COX) inhibitors, and in particular, are selective inhibitors of cyclooxygenase-2 (COX-2). COX-2 is the inducible isoform associated with inflammation, as opposed to the constitutive isoform, cyclooxygenase-1 (COX-1) which is an important 'housekeeping' enzyme in many tissues, including the gastrointestinal (GI) tract and the kidneys. The selectively of these compounds for COX-2 minimizes the unwanted GI and renal side-effects seen with currently marketed non-steroidal anti-inflammatory drugs (NSAIDs).

  本发明描述了式（I）的吡啶酮化合物，它们是环氧合酶（COX）抑制剂，特别是选择性抑制剂环氧合酶-2（COX-2）。COX-2是与炎症有关的诱导型同工酶，而非构成型同工酶环氧合酶-1（COX-1），后者是许多组织（包括胃肠道和肾脏）中重要的“管家”酶。这些化合物对COX-2的选择性最小化了目前市场上非甾体类抗炎药（NSAIDs）所见的不良胃肠道和肾脏副作用。
• Nitrogen-Neighbored Single-Cobalt Sites Enable Heterogeneous Oxidase-Type Catalysis
  作者：Qi Zhang、Mi Peng、Zirui Gao、Wendi Guo、Zehui Sun、Yi Zhao、Wu Zhou、Meng Wang、Bingbao Mei、Xian-Long Du、Zheng Jiang、Wei Sun、Chao Liu、Yifeng Zhu、Yong-Mei Liu、He-Yong He、Zhen Hua Li、Ding Ma、Yong Cao

  DOI：10.1021/jacs.2c12586

  日期：——
• ARYLPYRIDAZINONES AS PROSTAGLANDIN ENDOPEROXIDE H SYNTHASE BIOSYNTHESIS INHIBITORS
  申请人：Abbott Laboratories

  公开号：EP1007515A1

  公开（公告）日：2000-06-14