6-amino-4-(4-chlorophenyl)-2,4-dihydro-3,4-dimethylpyrano[2,3-c]pyrazole-5-carbonitrile

• 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-4-(4-chlorophenyl)-2,4-dihydro-3,4-dimethylpyrano[2,3-c]pyrazole-5-carbonitrile
• 英文别名: 6-amino-4-(4-chlorophenyl)-3,4-dimethyl-2H-pyrano[2,3-c]pyrazole-5-carbonitrile
• 化学式: C₁₅H₁₃ClN₄O
• 分子量: 300.747
• InChiKey: CFIOQKLBCCUVLQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.5
• 重原子数：
  21
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  87.7
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  对氯苯乙酮 、 3-甲基-2-吡唑啉-5-酮 、 丙二腈 在 bovine serum albumin 作用下， 以 乙醇 、 水 为溶剂， 反应 24.0h， 以95%的产率得到6-amino-4-(4-chlorophenyl)-2,4-dihydro-3,4-dimethylpyrano[2,3-c]pyrazole-5-carbonitrile
  参考文献：
  名称：

  牛血清白蛋白催化单罐，二氢吡喃并[2,3-的三组分合成Ç ]吡唑在含水乙醇衍生物†

  摘要：

  牛血清白蛋白（BSA）通过一锅，醛/酮/ Isatin，丙二腈和3-甲基-1 H-吡唑-5-（4）的三组分反应催化合成二氢吡喃并[2,3- c ]吡唑衍生物在这项工作中，在环境温度下在H 2 O–EtOH（7：3）中形成了H）-1。发现该催化剂可有效地用于醛，酮和靛红，得到相应的二氢吡喃并[2,3- c ]吡唑和螺[吲哚啉-3,4'-吡喃并[2,3- c][吡唑]衍生物的收率很高。BSA对各种醛，芳族/脂肪族酮和取代的isatins表现出广泛的催化混杂性。使用对环境无害的方案，催化剂的可重复使用性，避免使用有害溶剂，优异的收率，易于加工且不会形成副产物，使得BSA成为进一步用作生物催化剂的有吸引力的候选者。

  DOI：

  10.1039/c5ra13014j

文献信息

• Design and development of a new functionalized cellulose-based magnetic nanocomposite: preparation, characterization, and catalytic application in the synthesis of diverse pyrano[2,3-c]pyrazole derivatives
  作者：Ali Maleki、Vahid Eskandarpour

  DOI：10.1007/s13738-019-01610-9

  日期：2019.7

  for the preparation of a new cellulose-based functionalized magnetic nanocomposite catalyst is described. The structure and morphology of the prepared nanomaterial was characterized by scanning electron microscopy, energy-dispersive X-ray analysis, X-ray diffraction patterns, and Fourier transform infrared spectroscopy analyses. Then, its catalytic activity was investigated in the synthesis of 2,4-dihydropyrano[2

  在这项工作中，描述了一种用于制备新型纤维素基功能化磁性纳米复合催化剂的简便方案。通过扫描电子显微镜，能量色散X射线分析，X射线衍射图和傅立叶变换红外光谱分析对所制备的纳米材料的结构和形态进行表征。然后，其催化活性在2,4-二氢吡喃并[2,3-的合成进行了研究Ç ]吡唑并螺[二氢吲哚-3,4'-吡喃并[2,3- Ç吡唑衍生物是通过在短反应时间，高收率和温和条件下，在靛红或醛或苯乙酮，乙酰乙酸乙酯，水合肼和丙二腈或氰基乙酸乙酯之间进行一锅四组分反应而制得的。纳米复合材料仅需通过外部磁体分离即可重复使用数次，而不会明显降低活性。
• Solvent-free multicomponent synthesis of pyranopyrazoles: per-6-amino-β-cyclodextrin as a remarkable catalyst and host
  作者：Kuppusamy Kanagaraj、Kasi Pitchumani

  DOI：10.1016/j.tetlet.2010.04.087

  日期：2010.6

  A simple, green and efficient protocol is developed with per-6-amino-beta-cyclodextrin (per-6-ABCD) which acts simultaneously as a supramolecular host and as an efficient solid base catalyst for the solvent-free syntheses of various dihydropyrano[2,3-c]pyrazole derivatives involving a four-component reaction. This atom-economical protocol, reported for the first time with ketones also, includes a much milder procedure, does not involve any tedious work-up or purification, avoids hazardous reagents/byproducts and results in near quantitative yields. The catalyst can be reused at least six times without any change in its catalytic activity. (C) 2010 Elsevier Ltd. All rights reserved.
• Multicomponent synthesis of dihydropyrano[2,3-c]pyrazoles catalyzed by lipase from Aspergillus niger
  作者：Pranjal P. Bora、Manisha Bihani、Ghanashyam Bez

  DOI：10.1016/j.molcatb.2013.03.015

  日期：2013.8

  Lipase from Aspergillus niger (ANL) was found to be an extremely effective catalyst for four-component synthesis of dihydropyrano[2,3-c]pyrazoles from a stoichiometric mixture of ethyl acetoacetate, hydrazine hydrate, aldehyde/ketone, and malononitrile in ethanol. The lipase ANL showed a broad range of enzymatic promiscuity toward various aromatic and aliphatic aldehydes as well as ketones. Use of environmentally benign biocatalyst, reusability of the catalyst, room temperature reaction conditions, no hazardous solvent, and excellent yields are some of the important features of this protocol. (C) 2013 Elsevier B.V. All rights reserved.