ethyl 4-acetyl-5-methyl-1-(3-(trifluoromethyl)phenyl)-1H-pyrazole-3-carboxylate | 96734-82-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: ethyl 4-acetyl-5-methyl-1-(3-(trifluoromethyl)phenyl)-1H-pyrazole-3-carboxylate
• 英文别名: ethyl 4-acetyl-5-methyl-1-(3-trifluoromethylphenyl)-1H-pyrazole-3-carboxylate；1-(3-trifluoromethylphenyl)-3-carbethoxy-4-acetyl-5-methylpyrazole；Ethyl 4-acetyl-5-methyl-1-(3-trifluoromethyl-phenyl)-1h-pyrazole-3-carboxylate；ethyl 4-acetyl-5-methyl-1-[3-(trifluoromethyl)phenyl]pyrazole-3-carboxylate
• CAS: 96734-82-6
• 化学式: C₁₆H₁₅F₃N₂O₃
• 分子量: 340.302
• InChiKey: GYOPNZOILTWWLN-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  24
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  61.2
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  ethyl 4-acetyl-5-methyl-1-(3-(trifluoromethyl)phenyl)-1H-pyrazole-3-carboxylate 在 一水合肼 作用下， 以 乙醇 为溶剂， 反应 5.0h， 以67%的产率得到3,4-dimethyl-2-(3-trifluoromethylphenyl)-2,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-one
  参考文献：
  名称：

  Molecular design of pyrazolo[3,4-d]pyridazines

  摘要：

  Reactions of arenediazonium chlorides with ethyl 2-methyl-and 2-chloro-4-oxobutanoates gave, respectively, ethyl 2-(arylhydrazono)propanoates and chloro(arylhydrazono)acetates. Ethyl 2-(arylhydrazono)-propanoates reacted with the Vilsmeier-Haak reagent to give ethyl 1-aryl-4-formyl-1H-pyrazole-3-carboxylates. Ethyl 1-aryl-4-acetyl-5-methyl-1H-pyrazole-3-carboxylates were obtained by reaction of chloro(arylhydrazono) acetates with acetylacetone. Reactions of the obtained pyrazole derivatives with hydrazine and methylhydrazine led to the formation of the corresponding 3,4-R(2)(1)-6-R(2)-2-aryl-2,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-ones (R(1), R(2) = H, Me) which were subjected to alkylation and sulfurization.

  DOI：

  10.1134/s1070428008090182
• 作为产物：
  描述：

  间氨基三氟甲苯 在 盐酸 、 sodium ethanolate 、 sodium acetate 、 sodium nitrite 作用下， 以 乙醚 、 乙醇 为溶剂， 反应 18.0h， 生成 ethyl 4-acetyl-5-methyl-1-(3-(trifluoromethyl)phenyl)-1H-pyrazole-3-carboxylate
  参考文献：
  名称：

  Bernard; Cocco; Maccioni, Farmaco, Edizione Scientifica, 1985, vol. 40, # 4, p. 259 - 271

  摘要：

  DOI：

文献信息

• In Situ Generation of Nitrilimines from Aryldiazonium Salts and Diazo Esters: Synthesis of Fully Substituted Pyrazoles under Room Temperature
  作者：Ying Shao、Hao Zheng、Junfeng Qian、Xiaobing Wan

  DOI：10.1021/acs.orglett.8b00750

  日期：2018.4.20

  A novel one-pot synthesis for fully substituted pyrazoles has been well developed via the in situ generation of nitrilimines from aryldiazonium salts and diazo esters and a subsequent cycloaddition with 1,3-dicarbonyl compounds. High yields, mild conditions, wide substrate scope, and operational simplicity are the significant advantages of this methodology.

  通过从芳基重氮盐和重氮酯原位生成腈亚胺以及随后与1,3-二羰基化合物进行环加成反应，已开发出一种完全取代的吡唑的新型一锅合成方法。高产率，温和的条件，广泛的底物范围和操作简便性是该方法的显着优势。
• BERNARD, A.;COCCO, M. T.;MACCIONI, A.;PLUMITALLO, A., FARMACO. ED. SCI., 1985, 40, N 4, 259-271
  作者：BERNARD, A.、COCCO, M. T.、MACCIONI, A.、PLUMITALLO, A.

  DOI：——

  日期：——
• Bernard; Cocco; Maccioni, Farmaco, Edizione Scientifica, 1985, vol. 40, # 4, p. 259 - 271
  作者：Bernard、Cocco、Maccioni、Plumitallo

  DOI：——

  日期：——
• Molecular design of pyrazolo[3,4-d]pyridazines
  作者：V. S. Matiichuk、M. A. Potopnyk、N. D. Obushak

  DOI：10.1134/s1070428008090182

  日期：2008.9

  Reactions of arenediazonium chlorides with ethyl 2-methyl-and 2-chloro-4-oxobutanoates gave, respectively, ethyl 2-(arylhydrazono)propanoates and chloro(arylhydrazono)acetates. Ethyl 2-(arylhydrazono)-propanoates reacted with the Vilsmeier-Haak reagent to give ethyl 1-aryl-4-formyl-1H-pyrazole-3-carboxylates. Ethyl 1-aryl-4-acetyl-5-methyl-1H-pyrazole-3-carboxylates were obtained by reaction of chloro(arylhydrazono) acetates with acetylacetone. Reactions of the obtained pyrazole derivatives with hydrazine and methylhydrazine led to the formation of the corresponding 3,4-R(2)(1)-6-R(2)-2-aryl-2,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-ones (R(1), R(2) = H, Me) which were subjected to alkylation and sulfurization.