8-methoxy-3-methyl-1-phenylchromeno[4,3-c]pyrazol-4(1H)-one | 1273552-02-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 8-methoxy-3-methyl-1-phenylchromeno[4,3-c]pyrazol-4(1H)-one
• 英文别名: 8-methoxy-3-methyl-1-phenyl-1H,4H-chromeno[4,3-c]pyrazol-4-one；8-methoxy-3-methyl-1-phenylchromeno[4,3-c]pyrazol-4-one
• CAS: 1273552-02-5
• 化学式: C₁₈H₁₄N₂O₃
• 分子量: 306.321
• InChiKey: PUUHURQVIRZJNU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  23
• 可旋转键数：
  2
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.11
• 拓扑面积：
  53.4
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  6-methoxy-3-[1-(phenylhydrazono)-ethyl]-chromen-2-one 在 copper(ll) sulfate pentahydrate 作用下， 以 乙醇 为溶剂， 反应 2.0h， 以92%的产率得到8-methoxy-3-methyl-1-phenylchromeno[4,3-c]pyrazol-4(1H)-one
  参考文献：
  名称：

  以空气为氧化剂，铜催化3-酰基香豆素Hy的环化反应：高效合成吡唑类香豆素衍生物

  摘要：

  据报道，高效，便捷的Cu催化形成了铬诺[4,3 - c ]吡唑-4（1 H）-酮。在这个原子经济过程中，容易获得的3酰基香豆素通过直接的C–N键形成而被氧化环化。空气已成功地用作氧化剂，具有重要的经济和环境优势。在此过程中，可以使用各种3-酰基香豆素。

  DOI：

  10.1002/jhet.2052

文献信息

• X-Ray Supramolecular Structure, NMR Spectroscopy and Synthesis of 3-Methyl-1-phenyl-1H-chromeno[4,3-c]pyrazol-4-ones Formed by the Unexpected Cyclization of 3-[1-(Phenyl-hydrazono)ethyl]-chromen-2-ones
  作者：Itzia I. Padilla-Martinez、Irma Y. Flores-Larios、Efren V. García-Baez、Jorge Gonzalez、Alejandro Cruz、Francisco J. Martínez-Martinez

  DOI：10.3390/molecules16010915

  日期：——

  The molecular structures of nine 3-methyl-1-phenyl-1H-chromeno[4,3-c]pyrazol-4-one isomers, obtained by the oxidative cyclization of the corresponding 1-phenylhydrazono chromen-2-ones with copper acetate as catalyst, are reported. The molecular and supramolecular structures of the 8-chloro, 8-bromo- and 8-nitro isomers 2b-d, were established by X-ray diffraction. The halogenated isomers 2b and 2c are

  九种 3-methyl-1-phenyl-1H-chromeno[4,3-c]pyrazol-4-one 异构体的分子结构，通过相应的 1-phenylhydrazono chromen-2-ones 与乙酸铜氧化环化获得催化剂, 报道. 8-氯、8-溴和8-硝基异构体2b-d 的分子和超分子结构通过X 射线衍射确定。卤代异构体2b和2c是同晶型物，它们结晶为三斜晶系，空间群P-1，在不对称单元中有两个分子。化合物 2d 结晶为单斜晶系，空间群为 P2₁/m，晶胞中有两个分子。1-苯环 [Cg(4)] 几乎与色烯-吡唑环系统垂直。这种构象与溶液中苯环对 H-9 的各向异性 NMR 屏蔽效应一致。超分子结构几乎由CH···A (A = O, p) 和面对面的p-堆叠相互作用控制。色烯和吡唑环之间观察到的 p 堆积趋势由每种化合物中最佳供体环和受体环之间的重叠给出。
• One-Pot Cascade Access to Ru(II)-Catalyzed Regioselective C(sp²)-H Activation/Alkenylation of Chromeno[4,3-<i>c</i>]pyrazol-4-ones and Their Emission Solvatochromic Studies
  作者：Dinesh Singla、Kamaldeep Paul

  DOI：10.1021/acs.joc.2c02130

  日期：2022.12.16

  Herein, one-pot cascade synthesis of chromeno[4,3-c]pyrazol-4-ones and their Ru(II)-catalyzed regioselective ortho-alkenylation using imine as a weak directing group are done with moderate to good yields. The reaction proceeds through a three-step domino process during which intermediates are also isolated in excellent yields. In addition, this methodology generates a number of interesting fluorophores

  在此，使用亚胺作为弱导向基团的一锅法级联合成 chromeno[4,3 - c ]pyrazol-4-ones 及其 Ru(II) 催化的区域选择性邻位烯基化反应具有中等至良好的收率。反应通过三步多米诺骨牌过程进行，在此过程中中间体也以优异的产率分离。此外，该方法还产生了许多具有供体和受体基团的有趣荧光团，这些荧光团显示出正溶剂化显色现象。
• Synthesis, anticancer activity and photophysical properties of novel substituted 2-oxo-2H-chromenylpyrazolecarboxylates
  作者：J. Ashok Kumar、G. Saidachary、G. Mallesham、B. Sridhar、Nishant Jain、Shashi Vardhan Kalivendi、V. Jayathirtha Rao、B. China Raju

  DOI：10.1016/j.ejmech.2013.03.042

  日期：2013.7

  2-Oxo-2H-chromenylpyrazolecarboxylates (8a-h and 12a-zb) have been synthesized by [3 + 2] cycloaddition of 2H-chromenophenylhydrazones (7a-h and 11a-w) with diethyl/dimethylbut-2-ynedioates. Phenylchromeno[4,3-c]pyrazol-4(1H)-ones (13i-n) were prepared from corresponding phenylhydrazones (7a-h) with catalytic amount of piperidine in presence of pyridine as a solvent at 100 degrees C. All the synthesized compounds (8a-h, 12a-zb and 13a-n) were screened for anticancer activity against three human cancer cell lines such as prostate (DU-145), lung adenocarcinoma (A549), and cervical (HeLa) by standard MTT assay method. Further, photophysical properties (UV and fluorescence) for these compounds were discussed. (C) 2013 Elsevier Masson SAS. All rights reserved.