3-(4-chlorophenyl)-1,5-diphenyl-1H-pyrazole | 27293-95-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 3-(4-chlorophenyl)-1,5-diphenyl-1H-pyrazole
• 英文别名: 1,5-diphenyl-3-(4-chlorophenyl)pyrazole；3-(4-chlorophenyl)-1,5-diphenylpyrazole；3-(4-chloro-phenyl)-1,5-diphenyl-1H-pyrazole；1,5-Diphenyl-3-(p-chlorphenyl)pyrazol；4-(p-Chlorphenyl)-1,2-diphenylpyrazol；3-p-Chlorphenyl-1,5-diphenylpyrazol
• CAS: 27293-95-4
• 化学式: C₂₁H₁₅ClN₂
• 分子量: 330.816
• InChiKey: UZLBMUCQHFIHEZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.8
• 重原子数：
  24
• 可旋转键数：
  3
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  17.8
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  二硫代苯甲酸甲酯 在 potassium tert-butylate 、 sodium hydride 作用下， 以 N,N-二甲基甲酰胺 、 叔丁醇 为溶剂， 反应 5.0h， 生成 3-(4-chlorophenyl)-1,5-diphenyl-1H-pyrazole
  参考文献：
  名称：

  Cyclocondensation of Arylhydrazines with 1,3-Bis(het)arylmonothio-1,3-diketones and 1,3-Bis(het)aryl-3-(methylthio)-2-propenones: Synthesis of 1-Aryl-3,5-bis(het)arylpyrazoles with Complementary Regioselectivity

  摘要：

  Two efficient highly regioselective routes for the synthesis of unsymmetrically substituted 1-aryl-3,5-bis(het)arylpyrazoles with complementary regioselectivity starting from active methylene ketones have been reported. In the first protocol, the newly synthesized 1,3-bis(het)aryl-monothio-1,3-diketone precursors (prepared by condensation of active methylene ketones with het(aryl) dithioesters in the presence of sodium hydride) were reacted with arylhydrazines in refluxing ethanol under neutral conditions, furnishing 1-aryl-3,5-bis(het)arylpyrazoles 7, in which the het(aryl) moiety attached to the thiocarbonyl group of monothio-1,3-diketones is installed at the 3-position. In the second method, the corresponding 3-(methylthio)-1,3-bis(het)aryl-2-propenones (prepared in situ by base-induced alkylation of 1,3-monothiodiketones) were condensed with arylhydrazines in the presence of potassium tert-butoxide in. refluxing tert-butyl alcohol, yielding 1-aryl-3,5-bis(het)arylpyrazoles 9 with complementary regioselectivity (method A). The efficiency of this protocol was further improved by developing a one-pot, three-component procedure for the synthesis of pyrazoles 9, directly from active methylene ketones, by reacting in situ generated 3-(methylthio)-1,3-bis(het)aryl-2-propenones with arylhydrazines in the presence of sodium hydride (instead of potassium tert-butoxide as base). The structures and regiochemistry of newly synthesized pyrazoles were confirmed from their spectral and analytical data along with X-ray crystallographic data of three pairs of regioisomers.

  DOI：

  10.1021/jo400599e

文献信息

• A Regioselective Approach to Trisubstituted Pyrazoles via Palladium-Catalyzed Oxidative Sonogashira-Carbonylation of Arylhydrazines
  作者：Yongliang Tu、Zhenming Zhang、Tao Wang、Jiamei Ke、Junfeng Zhao

  DOI：10.1021/acs.orglett.7b01447

  日期：2017.7.7

  A palladium-catalyzed oxidative carbonylation of arylhydrazines and alkynes with balloon pressure CO/O2 to afford trisubstituted pyrazoles in a one-pot manner has been developed. The formation of trisubstituted pyrazoles involves a sequential C–N bond cleavage, carbonylation, Sonogashira coupling, Michael addition, and intramolecular condensation cyclization tandem process. An unprecedented oxidative

  已经开发了用球罐压力CO / O 2进行钯催化的芳基肼和炔烃的氧化羰基化反应，以一锅法得到三取代的吡唑。三取代吡唑的形成涉及连续的C–N键断裂，羰基化，Sonogashira偶联，迈克尔加成和分子内缩合环化串联过程。芳基肼的空前的氧化Sonogashira-羰基化反应在如此简便的吡唑方法中起着关键作用。
• Radical Addition of Hydrazones by α-Bromo Ketones To Prepare 1,3,5-Trisubstituted Pyrazoles via Visible Light Catalysis
  作者：Xiu-Wei Fan、Tao Lei、Chao Zhou、Qing-Yuan Meng、Bin Chen、Chen-Ho Tung、Li-Zhu Wu

  DOI：10.1021/acs.joc.6b00992

  日期：2016.8.19

  novel efficient tandem reaction of hydrazones and α-bromo ketones is reported for the preparation of 1,3,5-trisubstituted pyrazoles by visible light catalysis. In this system, the monosubstituted hydrazones show wonderful reaction activity with alkyl radicals, generated from α-bromo ketones. A radical addition followed by intramolecular cyclization affords the important pyrazole skeleton in good to

  visible和α-溴代酮的新型高效串联反应据报道可通过可见光催化制备1,3,5-三取代的吡唑。在该系统中，单取代与由α-溴代酮生成的烷基自由基表现出出色的反应活性。自由基加成，随后进行分子内环化，以良好至优异的产率提供了重要的吡唑骨架。这种在温和条件下具有宽泛的群体耐受性的有效策略为1,3,5-三取代的吡唑提供了一种潜在的方法。
• ¹³C NMR spectroscopy of heterocycles: 1-phenyl-3-aryl/<i>t</i>-butyl-5-arylpyrazoles
  作者：Amy N. Hockstedler、Beatrice A. Edjah、Saajid Z. Azhar、Hadrian Mendoza、Nicole A. Brown、Hayley B. Arrowood、Andrew C. Clay、Anand B. Shah、Glenda M. Duffek、Jianmei Cui、Alfons L. Baumstark

  DOI：10.1515/hc-2017-0034

  日期：2017.4.1

  and 13Pz–15Pz, were collected in DMSO-d6 at 50°C. A plot of the C4 chemical shifts for 1Pz–12Pz versus Hammet constants for 5-aryl substituents yielded a very good linear correlation (R2=0.96) with a slope of 1.5. The chemical shift data for C4 showed little or no dependence on 3-aryl substituents. The result for 13Pz–15Pz, despite only three points, was consistent with the first series results and

  摘要 一系列查耳酮 1-12 通过与苯肼反应转化为吡唑啉（1Pi-12Pi），然后通过 DDQ 氧化产生相应的吡唑（1Pz-12Pz）。使用类似方法合成了三种 1-苯基-3-叔丁基-5-芳基吡唑 (13Pz–15Pz)。分子建模研究预测两个系列的吡唑的 5-芳基具有 52°–54° 的扭转角，而 1-苯基基团预测具有 35°–37° 的扭转角。预测 3-芳基与第一个系列中的吡唑系统基本共面 (-3°)。1Pz–12Pz 和 13Pz–15Pz 两个系列的 13C NMR 数据均在 50°C 下在 DMSO-d6 中收集。1Pz-12Pz 的 C4 化学位移与 5-芳基取代基的 Hammet 常数的关系图产生了非常好的线性相关性 (R2=0.96)，斜率为 1.5。C4 的化学位移数据显示很少或不依赖于 3-芳基取代基。13Pz–15Pz 的结果，尽管只有 3 分，但与第一个系列的结果一致，产生的
• Regioselective Synthesis of 1,3,5-Trisubstituted Pyrazoles
  作者：Vidya G. Desai、Pooja C. Satardekar、Sampada Polo、Kashinath Dhumaskar

  DOI：10.1080/00397911.2010.531492

  日期：2012.3.15

  Abstract A new and a simple approach toward synthesis of 1,3,5-trisubstituted pyrazoles from chalcone arylhydrazones via oxidative cyclization has been achieved. 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone was successfully used as an oxidizing agent to give excellent yields of pyrazoles. GRAPHICAL ABSTRACT

  摘要 已经实现了一种通过氧化环化从查耳酮芳基腙合成 1,3,5-三取代吡唑的新方法和简单方法。2,3-二氯-5,6-二氰基-1,4-苯醌被成功用作氧化剂，得到了极好的吡唑收率。图形概要
• One-pot regioselective synthesis of substituted pyrazoles and isoxazoles in PEG-400/water medium by Cu-free nano-Pd catalyzed sequential acyl Sonogashira coupling–intramolecular cyclization
  作者：Narasimha Swamy Thirukovela、Ramesh Balaboina、Vinayak Botla、Ravinder Vadde、Sreekantha Babu Jonnalagadda、Chandra Sekhar Vasam

  DOI：10.1039/c9cy01335k

  日期：——

  Catalyst efficacy of in situ generated Pd-nanoparticles (PdNPs) in the regioselective one-pot synthesis of 3,5-di & 3,4,5-trisubstituted pyrazoles and 3,5-disubstituted isoxazoles in environmentally benign PEG-400/H2O medium, which involves the sequential (i) Cu-free acyl-Sonogashira coupling (ASC) and (ii) intramolecular ynone–amine cyclization under PTC conditions was described. The results of controlled

  在环境友好的PEG-400 / H 2中原位生成的Pd-纳米颗粒（PdNPs）在区域选择性一锅合成3,5-di和3,4,5-三取代的吡唑和3,5-二取代的异恶唑的催化剂效力描述了一种O介质，它涉及（i）在PTC条件下无Cu的酰基-Sonogashira偶联（ASC）和（ii）分子内的ynone-amine环化。受控实验的结果支持两个连续的催化循环（ASC /环化）的操作，并通过一锅法通过与炔酮结合的钯实现互补/相反的区域选择性。而且，就地一锅法反应序列的第一个催化循环后回收的PdNPs已连续五次再次使用。此外，在进行上述研究之前，某些常见的Pd-N-杂环卡宾（Pd-NHC）配合物在水和有机物中催化相同的一锅两步反应顺序（无铜ASC /环化）的功效还优化了溶剂。还可以从水中的Pd-NHC上方原位生成PdNP，但由于它们的尺寸较大，因此无法重复使用。