1-(4-chlorophenyl)-4-ethyl-3,5-dimethyl-1H-pyrazole | 1006613-71-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 1-(4-chlorophenyl)-4-ethyl-3,5-dimethyl-1H-pyrazole
• 英文别名: 1-(4-Chlorophenyl)-4-ethyl-3,5-dimethylpyrazole
• CAS: 1006613-71-3
• 化学式: C₁₃H₁₅ClN₂
• mdl: MFCD14587105
• 分子量: 234.728
• InChiKey: PZCREICIPREWRK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  16
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.307
• 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：

  3-乙基-2,4-戊二酮 、 4-氯苯肼 以 neat (no solvent) 为溶剂， 反应 0.25h， 以98%的产率得到1-(4-chlorophenyl)-4-ethyl-3,5-dimethyl-1H-pyrazole
  参考文献：
  名称：

  Mixing with microwaves: solvent-free and catalyst-free synthesis of pyrazoles and diazepines

  摘要：

  A simple and facile condensation of hydrazines/hydrazides and diamines with 1,3-diketones/beta-ketoester leads to the preparation of pyrazoles and diazepines in high yields. This eco-friendly protocol is accelerated by microwave heating and efficiently carried out without any reaction solvent or catalyst in as little as 5 min. Published by Elsevier Ltd.

  DOI：

  10.1016/j.tetlet.2013.01.029

文献信息

• Magnetic Nanoparticle-Supported Glutathione as a Sustainable Organocatalyst
  申请人：Varma Rajender S.

  公开号：US20110054180A1

  公开（公告）日：2011-03-03

  This invention relates to the use of nano-organocatalysts, and, more specifically, to the use of magnetic nanomaterial-supported organocatalysts. It is an object of the present invention to provide “green” catalysts and protocols. According to one embodiment of the invention, a nano-organocatalyst in the form of a magnetic nanomaterial-supported organocatalyst is provided. According to other embodiments of the invention, glutathione and cysteine are provided as organocatalysts and magnetic nanomaterial-supported glutathione and magnetic nanomaterial-supported cysteine are provided for use as nano-organocatalysts. According to another embodiment of the invention, a method of using a recyclable magnetic nanomaterial-supported organocatalyst using a totally benign aqueous protocol, without using any organic solvent in the reaction or during the workup, is provided. According to a further embodiment of the invention, a recyclable magnetic nanomaterial-supported organocatalyst for various organocatalytic reactions, including but not limited to Paal-Knorr reactions, aza-Michael addition and pyrazole synthesis, is provided.

  本发明涉及纳米有机催化剂的使用，更具体地涉及磁性纳米材料支撑的有机催化剂的使用。本发明的目的是提供“绿色”催化剂和方案。根据本发明的一个实施例，提供了一种磁性纳米材料支撑的有机催化剂的纳米有机催化剂。根据本发明的其他实施例，提供了谷胱甘肽和半胱氨酸作为有机催化剂，以及用作纳米有机催化剂的磁性纳米材料支撑的谷胱甘肽和磁性纳米材料支撑的半胱氨酸。根据本发明的另一个实施例，提供了一种使用可回收磁性纳米材料支撑的有机催化剂的方法，使用完全良性的水相方案，在反应过程中或处理过程中不使用任何有机溶剂。根据本发明的另一个实施例，提供了一种用于各种有机催化反应的可回收磁性纳米材料支撑的有机催化剂，包括但不限于Paal-Knorr反应、aza-Michael加成和吡唑合成。
• Nano-organocatalyst: magnetically retrievable ferrite-anchored glutathione for microwave-assisted Paal–Knorr reaction, aza-Michael addition, and pyrazole synthesis
  作者：Vivek Polshettiwar、Rajender S. Varma

  DOI：10.1016/j.tet.2009.11.015

  日期：2010.1

  Postsynthetic Surface modification of magnetic nanoparticles by glutathione imparts desirable chemical functionality and enables the generation of catalytic sites on the surfaces of ensuing organocatalysts. In this article, we discuss the developments, unique activity, and high selectivity of nano-organocatalysts for microwave-assisted Paal-Knorr reaction, aza-Michael addition, and pyrazole synthesis. Their insoluble character Coupled with paramagnetic nature enables easy separation of these nano-catalysts from the reaction mixture using external magnet, which eliminates the requirement of catalyst filtration. Published by Elsevier Ltd.
• Greener and rapid access to bio-active heterocycles: room temperature synthesis of pyrazoles and diazepines in aqueous medium
  作者：Vivek Polshettiwar、Rajender S. Varma

  DOI：10.1016/j.tetlet.2007.11.017

  日期：2008.1

  An expeditious room temperature synthesis of pyrazoles and diazepines by condensation of hydrazines/hydrazides and diamines with various 1,3-diketones is described. This greener protocol was catalyzed by polystyrene supported sulfonic acid (PSSA) and proceeded efficiently in water in the absence of any organic solvent within 1-2 min. (C) 2007 Elsevier Ltd. All rights reserved.
• US8324125B2
  申请人：——

  公开号：US8324125B2

  公开（公告）日：2012-12-04
• Mixing with microwaves: solvent-free and catalyst-free synthesis of pyrazoles and diazepines
  作者：Buchi Reddy Vaddula、Rajender S. Varma、John Leazer

  DOI：10.1016/j.tetlet.2013.01.029

  日期：2013.3

  A simple and facile condensation of hydrazines/hydrazides and diamines with 1,3-diketones/beta-ketoester leads to the preparation of pyrazoles and diazepines in high yields. This eco-friendly protocol is accelerated by microwave heating and efficiently carried out without any reaction solvent or catalyst in as little as 5 min. Published by Elsevier Ltd.