3-methyl-1-p-tolyl-4,5-dihydropyrazole | 92070-54-7

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 3-methyl-1-p-tolyl-4,5-dihydropyrazole
• 英文别名: 5-Methyl-2-(4-methylphenyl)-3,4-dihydropyrazole
• CAS: 92070-54-7
• 化学式: C₁₁H₁₄N₂
• 分子量: 174.246
• InChiKey: NIGXKAXHOCLATH-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  13
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  15.6
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  3-methyl-1-p-tolyl-4,5-dihydropyrazole 在 叔丁基过氧化氢 、 copper diacetate 作用下， 以 水 、 乙腈 为溶剂， 以78%的产率得到3-methyl-1-(p-tolyl)-1H-pyrazole
  参考文献：
  名称：

  TBHP / Cu（OAc）2介导的吡唑啉氧化：一种方便的制备吡唑的方法

  摘要：

  摘要 已经开发出一种有效且简单的氧化方案，用于在室温下从由TBHP / Cu（OAc）2介导的吡唑啉制备吡唑。本方案已成功地用于从杂环吡唑啉制备各种吡唑化合物。

  DOI：

  10.1080/00397911.2021.1885716
• 作为产物：
  描述：

  4-甲基苯肼盐酸盐 、 丁烯酮 在 溶剂黄146 作用下， 以 甲醇 为溶剂， 生成 3-methyl-1-p-tolyl-4,5-dihydropyrazole
  参考文献：
  名称：

  TBHP / Cu（OAc）2介导的吡唑啉氧化：一种方便的制备吡唑的方法

  摘要：

  摘要 已经开发出一种有效且简单的氧化方案，用于在室温下从由TBHP / Cu（OAc）2介导的吡唑啉制备吡唑。本方案已成功地用于从杂环吡唑啉制备各种吡唑化合物。

  DOI：

  10.1080/00397911.2021.1885716

文献信息

• Unexpected ring opening of pyrazolines with activated alkynes: synthesis of 1<i>H</i>-pyrazole-4,5-dicarboxylates and chromenopyrazolecarboxylates
  作者：Sai Teja Kolla、Nageswara Rao Rayala、Balasubramanian Sridhar、China Raju Bhimapaka

  DOI：10.1039/d1ob01727f

  日期：——

  prepared by reacting pyrazolines with activated alkynes under neat conditions without a catalyst. The products were formed via unexpected ring opening of pyrazolines with the elimination of styrene/ethylene. These types of transformations are unknown and the products formed were confirmed using their spectral/analytical data. In addition, the structures of compounds 5e and 5n were confirmed by single-crystal

  1 H -Pyrazole-4,5-dicarboxylates 和 chromenopyrazole carboxylates 是通过在没有催化剂的纯净条件下使吡唑啉与活化的炔烃反应制备的。产物是通过吡唑啉的意外开环和苯乙烯/乙烯的消除而形成的。这些类型的转化是未知的，并且使用它们的光谱/分析数据确认了所形成的产物。此外，化合物5e和5n的结构通过单晶X射线分析证实。进行了对照实验以支持所提出的反应机理。
• Use of Strobilurin Type Compounds for Combating Phytopathogenic Fungi Resistant to QO Inhibitors
  申请人：BASF SE

  公开号：US20140323305A1

  公开（公告）日：2014-10-30

  The present invention relates to the use of strobilurine type compounds of formula I and the N-oxides and the salts thereof for combating phytopathogenic fungi containing a mutation in the mitochondrial cytochrome b gene conferring resistance to Qo inhibitors, and to methods for combating such fungi. The invention also relates to novel compounds, processes for preparing these compounds, to compositions comprising at least one such compound, to plant health applications, and to seeds coated with at least one such compound.

  本发明涉及使用式I的蘑菇酸类化合物以及其N-氧化物和盐来对抗含有对Qo抑制剂产生耐药性的线粒体细胞色素b基因突变的植物病原真菌，以及对抗这类真菌的方法。该发明还涉及新颖的化合物、制备这些化合物的方法、包含至少一种这样的化合物的组合物、植物健康应用以及至少一种这样的化合物包被的种子。
• Microwave-assisted cyclocondensation of hydrazine derivatives with alkyl dihalides or ditosylates in aqueous media: syntheses of pyrazole, pyrazolidine and phthalazine derivatives
  作者：Yuhong Ju、Rajender S. Varma

  DOI：10.1016/j.tetlet.2005.07.018

  日期：2005.9

  Direct syntheses of 4,5-dihydro-pyrazole, pyrazolidine, and 1,2-dihydro-phthalazine derivatives via double-alkylation of hydrazines by alkyl dihalides or ditosylates were accomplished in aqueous media under microwave irradiation conditions; the environmentally friendlier chemical transformation occurred in a single step and eliminated the use of expensive metal catalysts in building two C–N bonds.

  在微波辐射条件下，在含水介质中，通过烷基二卤化物或二甲苯磺酸盐对肼的双烷基化反应，直接合成4，5-二氢吡唑，吡唑烷和1，2-二氢邻苯二甲酰肼衍生物。有利于环境的化学转化过程一步完成，消除了使用昂贵的金属催化剂来构建两个C–N键的过程。
• Aqueous N-Heterocyclization of Primary Amines and Hydrazines with Dihalides:  Microwave-Assisted Syntheses of <i>N</i>-Azacycloalkanes, Isoindole, Pyrazole, Pyrazolidine, and Phthalazine Derivatives
  作者：Yuhong Ju、Rajender S. Varma

  DOI：10.1021/jo051878h

  日期：2006.1.1

  The synthesis of nitrogen-containing heterocycles from alkyl dihalides (ditosylates) and primary amines and hydrazines via a simple and efficient cyclocondensation in an alkaline aqueous medium that occurs under microwave irradiation is described. This improved greener synthetic methodology provides a simple C C and straightforward one-pot approach to the synthesis of a variety of heterocycles, such as substituted azetidines, pyrrolidines, piperidines, azepanes, N-substituted 2,3-diliydro-1H-isoindoles. 4,5-dihydropyrazoles, pyrazolidines, and 1,2-dihydrophthalazines.
• Zinc-Catalyzed Synthesis of Pyrazolines and Pyrazoles via Hydrohydrazination
  作者：Karolin Alex、Annegret Tillack、Nicolle Schwarz、Matthias Beller

  DOI：10.1021/ol800592s

  日期：2008.6.1

  A novel regioselective synthesis of aryl-substituted pyrazolines and pyrazoles has been developed. Substituted phenylhydrazines react with 3-butynol in the presence of a catalytic amount of zinc triflate to give pyrazoline derivatives. The resulting products are easily oxidized in a one-pot procedure to the corresponding pyrazoles.