N-(pyridin-2-yl)benzimidamide | 4931-08-2

• 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: N-(pyridin-2-yl)benzimidamide
• 英文别名: N-(2-pyridyl)benzamidine；N'-pyridin-2-ylbenzenecarboximidamide
• CAS: 4931-08-2
• 化学式: C₁₂H₁₁N₃
• 分子量: 197.239
• InChiKey: YTAIULCXHWIZQI-UHFFFAOYSA-N

物化性质

• 熔点：
  99-99.5 °C
• 沸点：
  324.1±34.0 °C(Predicted)
• 密度：
  1.12±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：
  0.0
• 拓扑面积：
  51.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  N-(pyridin-2-yl)benzimidamide 在 碘 、 potassium carbonate 、 potassium iodide 作用下， 以 二甲基亚砜 为溶剂， 以95%的产率得到2-苯基[1,2,4]三唑并[1,5-a]吡啶
  参考文献：
  名称：

  I 2 / KI介导的氧化N–N键的形成，用于由N-芳基Am合成1,5-稠合的1,2,4-三唑

  摘要：

  描述了I 2 / KI介导的氧化N–N键的形成反应。这种新的对环境无害的方法可以方便地从容易获得的N-芳基合成各种1,2,4-三唑并[1,5- a ]吡啶和其他1,5-稠合的1,2,4-三唑efficient以高效和可扩展的方式。

  DOI：

  10.1021/acs.joc.5b01183
• 作为产物：
  描述：

  N-吡啶-2-基苯甲酰胺 在 ammonium hydroxide 、 copper(II) oxide 作用下， 反应 0.25h， 以75%的产率得到N-(pyridin-2-yl)benzimidamide
  参考文献：
  名称：

  One-Pot CuO-Catalyzed Green Synthesis of N(N′)-Arylbenzamidines as Potential Enzyme Inhibitors

  摘要：

  Ten N(N ')-arylbenzamidines were synthesized in 60-77% yield by one-pot microwave-assisted reaction of the corresponding N-arylbenzamides with aniline or ammonia in the presence of copper(II) oxide powder. The synthesized compounds were evaluated in vitro for inhibitory activity against several enzymes, namely acetylcholinesterase, butyrylcholinesterase, lipoxygenase, alpha-glucosidase, urease, and reverse transcriptase. Some compounds showed very good acetylcholinesterase and butyrylcholinesterase inhibitory activity. N '-(1,3-Benzothiazol-2-yl)- and N '-(1,3,4-thiadiazol-2-yl)benzamidines were the most active alpha-glucosidase inhibitors with IC50 values of 134.2 and 244.57 mu M, respectively. N '-(1,3-Benzothiazol-2-yl)benzamidine also inhibited urease. Most of the obtained compounds showed inhibitory activity against reverse transcriptase (anti-HIV activity), presumably due to intermolecular hydrogen bonding, good solubility, and hydrophilicity.

  DOI：

  10.1134/s1070428019070224

文献信息

• Vanadium-Catalyzed Oxidative C(CO)–C(CO) Bond Cleavage for C–N Bond Formation: One-Pot Domino Transformation of 1,2-Diketones and Amidines into Imides and Amides
  作者：Chander Singh Digwal、Upasana Yadav、P. V. Sri Ramya、Sravani Sana、Baijayantimala Swain、Ahmed Kamal

  DOI：10.1021/acs.joc.7b00950

  日期：2017.7.21

  identified that enables their transformation into imides and amides. The reaction proceeds by dual acylation of amidines via oxidative C(CO)–C(CO) bond cleavage of 1,2-diketones to afford N,N′-diaroyl-N-arylbenzamidine intermediates. In the reaction, these intermediates are easily hydrolyzed into imides and amides through vanadium catalysis. This method provides a practical, simple, and mild synthetic

  1,2-二酮与am的新型钒催化的一锅多米诺反应已被鉴定，该反应可使它们转化为酰亚胺和酰胺。反应通过1，2-二酮的C（CO）-C（CO）键的氧化裂解使dual进行双酰化，从而得到N，N'-二酰基-N-芳基苯甲m中间体。在反应中，这些中间体容易通过钒催化水解成酰亚胺和酰胺。该方法提供了一种实用，简单且温和的合成方法，可以高产率获得各种酰亚胺和酰胺。而且，具有长链烷基的酰亚胺和酰胺键的一步构建是该方案的吸引人的特征。
• Synthesis and properties of imidazolo-fused benzotriazinyl radicals
  作者：Andrey A. Berezin、Christos P. Constantinides、Styliana I. Mirallai、Maria Manoli、Levy L. Cao、Jeremy M. Rawson、Panayiotis A. Koutentis

  DOI：10.1039/c3ob41169a

  日期：——

  1,3-Diphenylbenzo[e][1,2,4]triazin-7(1H)-one, the oxidation product of 1,3-diphenyl-1,4-dihydro-1,2,4-benzotriazin-4-yl (Blatter's radical), reacts with N′-arylbenzamidines in PhMe at ca. 100 °C in the presence of N,N-diisopropylethylamine (Hünig's base) (1 equiv.) to give N′-aryl-N-(1,7-dihydro-7-oxo-1,3-diphenylbenzo[e][1,2,4]triazin-6-yl)benzimidamides in 49–95% yield. In neat AcOH heated at ca. 120 °C, N′–aryl-N-(1,7-dihydro-7-oxo-1,3-diphenylbenzo[e][1,2,4]triazin-6-yl)benzimidamides cyclodehydrate to give the novel 8-substituted 1,3,7-triphenyl-4,8-dihydro-1H-imidazo[4,5-g][1,2,4]benzotriazin-4-yls in 13–81% yield. During the optimization of this cyclodehydration an additional oxazole fused benzotriazinyl radical 1,3,7-triphenyl-1,4-dihydro[1,3]oxazolo[4,5-g][1,2,4]benzotriazin-4-yl was isolated as a side product and characterized. The CV and EPR data of the imidazolo- and oxazolo-fused radicals are presented as well as single crystal X-ray structures of 1,3,7-triphenyl-1,4-dihydro-[1,3]oxazolo[4,5-g][1,2,4]benzotriazin-4-yl and 1,3,7,8-tetraphenyl-4,8-dihydro-1H-imidazo[4,5-g][1,2,4]benzotriazin-4-yl.

  1,3-二苯基苯并[e][1,2,4]三嗪-7(1H)-酮，即1,3-二苯基-1,4-二氢-1,2,4-苯并三嗪-4-基（Blatter自由基）的氧化产物，在N,N-二异丙基乙胺（Hünig碱）（1当量）存在下，于约100°C的甲苯中与N'-芳基苯甲脒反应，以49-95%的产率生成N'-芳基-N-(1,7-二氢-7-氧代-1,3-二苯基苯并[e][1,2,4]三嗪-6-基)苯并咪唑胺。在纯乙酸中加热至约120°C时，N'–芳基-N-(1,7-二氢-7-氧代-1,3-二苯基苯并[e][1,2,4]三嗪-6-基)苯并咪唑胺环化脱水，以13-81%的产率生成新型8-取代的1,3,7-三苯基-4,8-二氢-1H-咪唑并[4,5-g][1,2,4]苯并三嗪-4-基。在优化这一环化脱水过程中，还分离出了一种副产物——噁唑并苯并三嗪自由基1,3,7-三苯基-1,4-二氢[1,3]噁唑并[4,5-g][1,2,4]苯并三嗪-4-基，并对其进行了表征。同时提供了咪唑并和噁唑并自由基的CV和EPR数据，以及1,3,7-三苯基-1,4-二氢-[1,3]噁唑并[4,5-g][1,2,4]苯并三嗪-4-基和1,3,7,8-四苯基-4,8-二氢-1H-咪唑并[4,5-g][1,2,4]苯并三嗪-4-基的单晶X射线结构。
• PhI(OCOCF₃)₂-Mediated Intramolecular Oxidative N–N Bond Formation: Metal-Free Synthesis of 1,2,4-Triazolo[1,5-<i>a</i>]pyridines
  作者：Zisheng Zheng、Shuangyu Ma、Linlin Tang、Daisy Zhang-Negrerie、Yunfei Du、Kang Zhao

  DOI：10.1021/jo500298j

  日期：2014.5.16

  readily synthesized from N-(pyridin-2-yl)benzimidamides via phenyliodine bis(trifluoroacetate)-mediated intramolecular annulation. This novel strategy allows for the convenient construction of a 1,2,4-triazolo[1,5-a]pyridine skeleton through direct metal-free oxidative N–N bond formation, featuring a short reaction time and high reaction yields.

  具有生物学重要性的1,2,4-三唑并[1,5- a ]吡啶很容易通过苯基碘双（三氟乙酸）介导的分子内环化反应从N-（吡啶-2-基）苯甲酰胺酰胺合成。这种新颖的策略允许通过直接形成无金属的氧化性N–N键来方便地构建1,2,4-三唑并[1,5- a ]吡啶骨架，其反应时间短且反应产率高。
• Base-Mediated Amination of Alcohols Using Amidines
  作者：Chunyan Zhang、Zehua Li、Jianbin Chen、Shuo Qi、Yanchen Fang、Sheng Zhang、Chaoyu Ren、Fenghong Lu、Zuyu Liang、Shaohua Jiang、Xiaofei Jia、Shuangming Yu、Guoying Zhang

  DOI：10.1021/acs.joc.0c00281

  日期：2020.6.19

  Novel and efficient base-mediated N-alkylation and amidation of amidines with alcohols have been developed, which can be carried out in one-pot reaction conditions, which allows for the synthesis of a wide range of N-alkyl amines and free amides in good to excellent yields with high atom economy. In contrast to borrowing hydrogen/hydrogen autotransfer or oxidative-type N-alkylation reactions, in which

  已经开发出新颖且有效的碱介导的alcohol基N-烷基化和of与醇的酰胺化反应，该反应可以在一锅法反应条件下进行，从而可以很好地合成各种N-烷基胺和游离酰胺。在高原子经济的情况下达到出色的产量。与借用氢/氢自转移或氧化型N-烷基化反应（其中醇通过过渡金属催化的或氧化的有氧脱氢作用而活化）相反，使用am提供了胺的有效替代。这避免了氧化剂或催化剂被配体稳定化的N-烷基化的内在必要性。
• Transition‐Metal‐Free Synthesis of 1,2‐diphenyl‐1 <i>H</i> ‐benzo[ <i>d</i> ] Imidazole Derivatives from <i>N</i> ‐phenylbenzimidamides and Cyclohexanones
  作者：Guoqiang Lu、Nan Luo、Fangpeng Hu、Zihui Ban、Zhenzhen Zhan、Guo‐Sheng Huang

  DOI：10.1002/adsc.201901161

  日期：2020.2.6

  A transition‐metal‐free strategy for the formation of 1,2‐diphenyl‐1H‐benzo[d] imidazoles from N‐phenylbenzimidamides and cyclohexanones is introduced. This is the first report on the direct synthesis of 1,2‐diphenyl‐1H‐benzo[d] imidazoles from cyclohexanones and N‐phenylbenzimidamides via iodine‐ promoted oxidative cyclization. Non‐aromatic cyclohexanones were smoothly dehydrogenated, and acted as

  引入了一种无过渡金属的策略，用于由N-苯基苯甲酰胺和环己酮形成1,2-二苯基-1 H-苯并[ d ]咪唑。这是关于通过碘促进的氧化环化反应，由环己酮和N-苯基苯甲酰胺直接合成1,2-二苯基-1 H-苯并[ d ]咪唑的第一份报告。非芳族环己酮可顺利脱氢，并使用氧气作为绿色氧化剂充当芳基源。碘的催化使用使得该方法相当简单，更经济和方便。在优化条件下，各种取代的1,2-二苯基-1 H-苯并[ d使咪唑平稳反应，并以中等至优异的产率生成所需的取代的咪唑。

表征谱图