6-amino-3-methyl-4-(2,4-dichlorophenyl)-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile | 297162-27-7

• 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: 6-amino-3-methyl-4-(2,4-dichlorophenyl)-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile
• 英文别名: 6-amino-4-(2,4-dichlorophenyl)-3-methyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile；6-amino-4-(2,4-dichlorophenyl)-3-methyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile
• CAS: 297162-27-7；671771-00-9
• 化学式: C₁₄H₁₀Cl₂N₄O
• 分子量: 321.166
• InChiKey: HHYQSCGLSKGIGX-UHFFFAOYSA-N

物化性质

• 沸点：
  561.4±50.0 °C(Predicted)
• 密度：
  1.57±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.6
• 重原子数：
  21
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  87.7
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  6-amino-3-methyl-4-(2,4-dichlorophenyl)-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile 在 ammonium acetate 作用下， 反应 44.0h， 生成 4-(2,4-dichlorophenyl)-3,7-dimethyl-4,6-dihydropyrazolo[4,3:5,6]pyrano[2,3-d]pyrimidin-5(1H)-one
  参考文献：
  名称：

  A Synthetic Approach to Pyrazolopyranopyrimidinones and Pyrazolopyranooxazinones as Antimicrobial Agents

  摘要：

  迄今为止未知的6-氨基-4-(2-氯-5-硝基苯基)-3-甲基-1,4-二氢吡喃[2,3-c]吡唑-5-碳腈1a被合成。化合物1a及其2,4-二氯苯基衍生物1b被用作制备新型吡唑吡喃-[噁唑啉2a-d和嘧啶酮3a-d]的构建块。通过两个替代的酰化步骤和氨解反应实现了这些化合物的合成。合成化合物的结构通过光谱数据和元素分析得以阐明。对这些产物作为抗微生物药剂的筛选和评估表明，衍生物1b、2s、3b和3d具有强效活性。

  DOI：

  10.1155/2016/5286462
• 作为产物：
  描述：

  3-甲基-3-吡唑啉-5-酮 、 2-[(2,4-二氯苯基)亚甲基]丙二腈 在 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 0.03h， 以55%的产率得到6-amino-3-methyl-4-(2,4-dichlorophenyl)-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile
  参考文献：
  名称：

  Dihydropyrano [2,3-c] pyrazole: Novel in vitro inhibitors of yeast α-glucosidase

  摘要：

  Inhibition of alpha-glucosidase enzyme activity is a reliable approach towards controlling post-prandial hyperglycemia associated risk factors. During the current study, a series of dihydropyrano[ 2,3-c] pyrazoles (1-35) were synthesized and evaluated for their a-glucosidase inhibitory activity. Compounds 1, 4, 22, 30, and 33 were found to be the potent inhibitors of the yeast alpha-glucosidase enzyme. Mechanistic studies on most potent compounds reveled that 1, 4, and 30 were non-competitive inhibitors (K-i = 9.75 +/- 0.07, 46 +/- 0.0001, and 69.16 +/- 0.01 mu M, respectively), compound 22 is a competitive inhibitor (K-i = 190 +/- 0.016 mu M), while 33 was an uncompetitive inhibitor (K-i = 45 +/- 0.0014 mu M) of the enzyme. Finally, the cytotoxicity of potent compounds (i.e. compounds 1, 4, 22, 30, and 33) was also evaluated against mouse fibroblast 3T3 cell line assay, and no toxicity was observed. This study identifies non-cytotoxic novel inhibitors of alpha-glucosidase enzyme for further investigation as anti-diabetic agents. (C) 2016 Elsevier Inc. All rights reserved.

  DOI：

  10.1016/j.bioorg.2016.01.008

文献信息

• Bovine serum albumin: An efficient and green biocatalyst for the one-pot four-component synthesis of pyrano[2,3-c]pyrazoles
  作者：Xingtian Huang、Zhipeng Li、Dongyang Wang、Yiqun Li

  DOI：10.1016/s1872-2067(15)61088-9

  日期：2016.9

  four-component reaction of aryl aldehydes, malononitrile, hydrazine hydrate, and ethyl acetoacetate for the synthesis of pyrano[2,3-c]pyrazoles under mild reaction conditions. The BSA biocatalyst also displayed a high catalytic affinity for acyclic/cyclic ketones to yield the corresponding pyrano[2,3-c]pyrazoles or their spirocyclic variants. The BSA could be used for at least five cycles without serious loss

  生物催化剂的使用在化学催化领域引起了越来越多的关注。在这里，我们已经证明，牛血清白蛋白 (BSA) 是一种普遍存在的、廉价的、非酶促转运蛋白，可以在芳基醛、丙二腈、水合肼、和乙酰乙酸乙酯用于在温和的反应条件下合成吡喃并[2,3-c]吡唑。BSA 生物催化剂还显示出对无环/环状酮的高催化亲和力，以产生相应的吡并 [2,3-c] 吡唑或其螺环变体。BSA 可以使用至少五个循环而不会严重损失催化活性。这种新颖、高效的协议具有产量高、操作简单和相对温和的环境影响等优点。而且，
• Catalyst-free green synthesis of dihydropyrano[2,3-c]pyrazole scaffolds assisted by ethylene glycol (E-G) as a reusable and biodegradable solvent medium
  作者：Farzaneh Mohamadpour

  DOI：10.1007/s12039-020-01775-4

  日期：2020.12

  green ethylene glycol (E-G) can be recycled at least six times with no considerable reduction in activity making it greatly advantageous in addressing the industrial requirements and environmental worries. Graphic AbstractThe catalyst-free and environmentally friendly synthesis of dihydropyrano[2,3-c]pyrazole scaffolds are reported via ethylene glycol (E-G) as a green, reusable and biodegradable promoting

  摘要我们发现无催化剂，绿色和快速一锅四部分串联的二氢吡喃并[2,3-的准备策略Ç ]吡唑-生物显著支架-通过Knoevenagel反应，迈克尔环合基于绿色化学原则。当前实践的重点是在无害反应条件下的应用，无催化剂，操作简便，使用廉价的引发剂，通过分离纯产物易于过滤，从而避免了对柱色谱法的需求，无金属，优异的收率，节省了反应时间。但是，绿色乙二醇（EG）可以循环使用至少六次，而活性不会显着降低，这使其在满足工业要求和环境问题方面具有极大优势。 图形摘要的二氢吡喃的和环境友好的无催化剂的合成[2,3- c ^ ]吡唑支架报告通过乙二醇（EG），为绿色，可重复使用的和可生物降解促进媒体经由乙酰乙酸乙酯，水合肼/的串联的Knoevenagel -迈克尔反应环化缩合苯肼，芳香族/脂肪族醛和丙二腈提供了预期的产品，具有出色的收率和较短的反应时间，这可能解决了工业上的一些成本问题
• Meglumine promoted one-pot, four-component synthesis of pyranopyrazole derivatives
  作者：Rui-Yun Guo、Zhi-Min An、Li-Ping Mo、Shu-Tao Yang、Hong-Xia Liu、Shu-Xia Wang、Zhan-Hui Zhang

  DOI：10.1016/j.tet.2013.09.082

  日期：2013.11

  catalyst for the synthesis of a series of pyranopyrazole derivatives via a one-pot, four-component reaction of carbonyl compound or isatin, hydrazine hydrate, malononitrile, and β-keto ester in EtOH–H2O. The catalyst was found to work extremely for aldehydes, ketones or isatins at room temperature to give the corresponding dihydropyrano[2,3-c]pyrazole or spiro[indoline-3,4′-pyrano[2,3-c]pyrazole] derivatives

  证明葡甲胺是一种生物基化学物质，它是通过羰基化合物或靛红，水合肼，丙二腈和β的单锅四组分反应合成一系列吡喃并吡唑衍生物的高效且可重复使用的催化剂。酮的EtOH-H酯2 O.将催化剂在室温下发现极其对醛，酮或靛红工作以得到相应的二氢吡喃并[2,3- c ^ ]吡唑或螺[二氢吲哚-3,4'-吡喃并并[2,3- c ^ ]吡唑]衍生物以高产率。这个新方法的显着特点是广泛的底物范围，室温下的反应条件，反应时间短，产量高，容易进行后处理过程中，催化剂的可重用性，并且不存在有害的有机溶剂。
• Magnetized melamine‐modified polyacrylonitrile (PAN@melamine/Fe ₃ O ₄ ) organometallic nanomaterial: Preparation, characterization, and application as a multifunctional catalyst in the synthesis of bioactive dihydropyrano [2,3‐c]pyrazole and 2‐amino‐3‐cyano 4H‐pyran derivatives
  作者：Fereshte Hassanzadeh‐Afruzi、Haniyeh Dogari、Farhad Esmailzadeh、Ali Maleki

  DOI：10.1002/aoc.6363

  日期：2021.10

  the fabricated nanocomposite was used as a heterogeneous catalyst in two multicomponent reactions (MCRs) for the synthesis of biologically active dihydropyrano[2,3-c]pyrazole and 2-amino-3-cyano 4H-pyran derivatives. The corresponding products were obtained in excellent yields without a complicated work-up process. Besides, the prepared nanocatalyst could be recycled and reused at least five consecutive

  通过三个主要步骤制备了一种高效的磁性聚合物基纳米材料，包括聚丙烯腈 (PAN) 的合成、用三聚氰胺改性 PAN 以及通过原位构建 Fe 3 O 4 MNP对 PAN@三聚氰胺化合物进行磁化。新型PAN@三聚氰胺/Fe 3 O 4有机金属纳米复合材料通过傅里叶变换红外 (FT-IR) 光谱、能量色散 X 射线 (EDX) 光谱、热重分析 (TGA)、场发射扫描电子显微镜 (FESEM)、透射电子显微镜 (TEM) 等各种技术得到了很好的表征。 )、X 射线衍射 (XRD) 图案和振动样品磁强计 (VSM) 曲线。随后，制备的纳米复合材料在两个多组分反应 (MCR) 中用作多相催化剂，用于合成具有生物活性的二氢吡喃并 [2,3-c] 吡唑和 2-氨基-3-氰基 4H-吡喃衍生物。无需复杂的后处理过程即可以优异的产率获得相应的产品。除了，
• Rapid One-pot, Four Component Synthesis of Pyranopyrazoles Using Heteropolyacid Under Solvent-free Condition
  作者：Hemant V. Chavan、Santosh B. Babar、Rahul U. Hoval、Babasaheb P. Bandgar

  DOI：10.5012/bkcs.2011.32.11.3963

  日期：2011.11.20

  A series of pyranopyrazoles, was efficiently synthesized via one-pot, four component reaction of ethyl acetoacetate, hydrazine hydrate, aldehydes and malononitrile in the presence of catalytic amount silicotungstic acid under solvent free condition. NOE experiments confirmed that the product exist exclusively in the 2H form. The present protocol offers the advantages of clean reaction, short reaction time, high yield, easy purification and economic availability of the catalyst.

  一锅法制备了一系列吡喃吡唑啉衍生物，通过在没有溶剂条件下，以催化量的硅钨酸为催化剂，将乙酰乙酸乙酯、水合肼、醛和丙二腈进行四组分反应高效合成。NOE实验证实产物仅以2H形式存在。当前方法具有反应干净、反应时间短、产率高、易于纯化以及催化剂经济可得等优点。