1-benzyl-3-methylquinoxalin-2(1H)-one | 84546-74-7

• 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: 1-benzyl-3-methylquinoxalin-2(1H)-one
• 英文别名: 2(1H)-Quinoxalinone, 3-methyl-1-(phenylmethyl)-；1-benzyl-3-methylquinoxalin-2-one
• CAS: 84546-74-7
• 化学式: C₁₆H₁₄N₂O
• 分子量: 250.3
• InChiKey: FJLBBMABBOQQAJ-UHFFFAOYSA-N

物化性质

• 熔点：
  90-91 °C
• 沸点：
  423.7±38.0 °C(Predicted)
• 密度：
  1.15±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  19
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.12
• 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：

  1-benzyl-3-methylquinoxalin-2(1H)-one 在 N-溴代丁二酰亚胺(NBS) 、 过氧化苯甲酰 作用下， 以 四氯化碳 为溶剂， 反应 16.5h， 以33.5%的产率得到1-benzyl-3-bromomethyl-1H-quinoxalin-2-one
  参考文献：
  名称：

  Structure−Activity Studies of Substituted Quinoxalinones as Multiple-Drug-Resistance Antagonists

  摘要：

  A significant problem in the clinical treatment of cancer relates to the development of tumor resistance to many chemotherapeutic agents. Acquired drug resistance is often mediated through overexpression of membrane transport proteins that effectively efflux anticancer agents. Two of the best-studied transporters, P-glycoprotein (Pgp) and MRP1, have pharmacological properties that only partially overlap. In our search for improved drug-resistance antagonists, we have identified a family of substituted quinoxalines that selectively antagonizes Pgp over MRP1. Consequently, a focused library of congeners was designed and synthesized starting with a parent bromomethylquinoxalinone. This parent quinoxalinone was then condensed with a series of phenols to yield a family of substituted phenoxymethylquinoxalinones. These compounds were evaluated for their toxicity toward drug-sensitive MCF-7 breast carcinoma cells and for their abilities to antagonize Pgp and MRP1 in drug-resistant cell lines (NCI/ADR and MCF-7/VP, respectively). The results of this structure-activity study indicate that compounds with carbonyl substitutions of the phenoxy group tester, amide, or ketone moieties) demonstrate excellent antagonism of Pgp while having relatively low toxicity toward drug-sensitive cells. Importantly, none of these compounds antagonized MRP1. Because of their transporter selectivity, we predict that substituted quinoxalinones may be more effective MDR modulators in vivo than are nonselective transporter antagonists.

  DOI：

  10.1021/jm000282d
• 作为产物：
  描述：

  3-甲基-3-喹诺醇 在 [Ir(dF(CF₃)ppy)₂(dtbbpy)](PF₆) 、 sodium carbonate 、 potassium carbonate 作用下， 以 水 、 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 反应 5.0h， 生成 1-benzyl-3-methylquinoxalin-2(1H)-one
  参考文献：
  名称：

  N,N,N',N'-四甲基乙二胺使能光氧化还原催化的 N-杂芳烃的 C-H 甲基化

  摘要：

  针对有价值的甲基化过程，在这项工作中首次将易于获得且价格低廉的N , N , N' , N' -四甲基乙二胺(TMEDA) 确定为一种新的甲基化来源。凭借这种简单的甲基化试剂，开发了一种简便实用的N-杂芳烃直接 C-H 甲基化方案，具有反应条件温和、底物范围广和可扩展性等特点。机理研究表明，基本上涉及顺序光氧化还原、碱基辅助质子转移、碎裂和互变异构化过程。

  DOI：

  10.1021/acs.joc.1c01325

文献信息

• A new facile, efficient synthesis and structure peculiarity of quinoxaline derivatives with two benzimidazole fragments
  作者：Vakhid A. Mamedov、Nataliya A. Zhukova、Victor V. Syakaev、Aidar T. Gubaidullin、Tat'yana N. Beschastnova、Dil'bar I. Adgamova、Aida I. Samigullina、Shamil K. Latypov

  DOI：10.1016/j.tet.2012.10.045

  日期：2013.1

  A highly efficient and versatile method for the synthesis of quinoxaline derivatives with two benzimidazole fragments have been developed on the basis of the ring contraction of 3-(benzimidazo-2-yl)quinoxalin-2(1H)-one with 1,2-diaminobenzene and its various types of substituted and condensed derivatives. Owing to the inter- and intramolecular processes, involving self association, proton exchange

  基于3-（苯并咪唑-2-基）喹喔啉-2（1 H）-与1,2-的环收缩，已开发出一种高效且通用的具有两个苯并咪唑片段的喹喔啉衍生物的合成方法。二氨基苯及其各种类型的取代和稠合衍生物。由于分子间和分子内过程，涉及桥联和相邻碳原子的大多数双-苯并咪唑基喹喔啉信号的几种形式之间的自缔合，质子交换，构象和/或互变异构交换，且NMR光谱中的苯并咪唑片段变宽。苯并咪唑片段与分子的喹喔啉核心之间的共轭作用比喹喔啉衍生物（10c）与其噻二唑[ f ]-（17）和吡咯并[ a ]-（19）环化了衍生物，导致整个分子的平面度更大。
• C−H Methylation of Iminoamido Heterocycles with Sulfur Ylides**
  作者：Prithwish Ghosh、Na Yeon Kwon、Saegun Kim、Sangil Han、Suk Hun Lee、Won An、Neeraj Kumar Mishra、Soo Bong Han、In Su Kim

  DOI：10.1002/anie.202010958

  日期：2021.1.4

  The direct methylation of N‐heterocycles is an important transformation for the advancement of pharmaceuticals, agrochemicals, functional materials, and other chemical entities. Herein, the unprecedented C(sp2)‐H methylation of iminoamido heterocycles as nucleoside base analogues is described. Notably, trimethylsulfoxonium salt was employed as a methylating agent under aqueous conditions. A wide substrate

  N杂环的直接甲基化是药物，农用化学品，功能材料和其他化学实体发展的重要转变。在此，史无前例的C（sp 2描述了亚氨基酰胺杂环作为核苷碱基类似物的H-甲基化。值得注意的是，在水性条件下使用三甲基ulf盐作为甲基化剂。获得了较宽的底物范围和出色的官能团耐受性。此外，该方法可以很容易地应用于氮杂尿嘧啶核苷的位点选择性甲基化。克级反应和产物各种转化的可行性突出了所开发方法的合成潜力。联合氘标记实验有助于阐明合理的反应机理。
• Peroxide-mediated site-specific C–H methylation of imidazo[1,2-<i>a</i>]pyridines and quinoxalin-2(1<i>H</i>)-ones under metal-free conditions
  作者：Shengzhou Jin、Hua Yao、Sen Lin、Xiaoqing You、Yao Yang、Zhaohua Yan

  DOI：10.1039/c9ob02328c

  日期：——

  An effective approach to realize the direct methylation of imidazo[1,2-a]pyridines and quinoxalin-2(1H)-ones with peroxides under metal-free conditions is described.

  一种在无金属条件下利用过氧化物实现咪唑并[1,2-a]吡啶和喹喔啉-2(1H)-酮的直接甲基化的有效方法被描述。
• A Catalyst-Free Minisci-Type Reaction: the C-H Alkylation of Quinoxalinones with Sodium Alkylsulfinates and Phenyliodine(III) Dicarboxylates
  作者：Liping Wang、Jiquan Zhao、Yuting Sun、Hong-Yu Zhang、Yuecheng Zhang

  DOI：10.1002/ejoc.201901266

  日期：2019.11.10

  A direct C–H alkylation of quinoxalinones at the C‐3 position with sodium alkylsulfinates and phenyliodine(III) dicarboxylates has been developed under catalyst‐free conditions. A series of 3‐alkylquinoxalinones were afforded in moderate to excellent yields in this protocol, which offers a practical and efficient access to biologically interesting 3‐alkylquinoxalin‐2(1H)‐one derivatives.

  在无催化剂的条件下，已开发了在烷基的C-3位置与烷基亚磺酸钠和苯基碘（III）二羧酸直接对喹喔啉酮进行CH烷基化反应。在该方案中，以中等到极好的产率提供了一系列3-烷基喹喔啉酮，这为生物学上令人感兴趣的3-烷基喹喔啉-2（1 H）-one衍生物提供了实用而有效的途径。
• Visible-light induced decarboxylative alkylation of quinoxalin-2(1<i>H</i>)-ones at the C3-position
  作者：Wenxuan Xue、Yingpeng Su、Ke-Hu Wang、Rong Zhang、Yawei Feng、Lindan Cao、Dangfeng Huang、Yulai Hu

  DOI：10.1039/c9ob01169b

  日期：——

  simple and efficient method for the visible light induced direct carbon alkylation of quinoxalin-2(1H)-ones at the C3 position is described. This protocol employs cheap and readily available phenyliodine(III) dicarboxylates as the alkylation reagents to conduct decarboxylative radical coupling reaction with quinoxalin-2(1H)-ones. The process exhibits excellent compatibility to functional groups and

  描述了一种简单有效的方法，用于在C3位置上由可见光诱导喹喔啉-2（1 H）-one的直接碳烷基化。该方案采用便宜且容易获得的二羧酸苯基碘（III）作为烷基化试剂，以与喹喔啉-2（1 H）-one进行脱羧自由基偶联反应。该方法表现出对官能团的优异相容性，并提供了方便且选择性地获得各种3-烷基喹喔啉-2（1 H）-酮的良好收率。