4-isopropylidene-3,5-pyrazolidinedione | 89532-74-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑烷类
• 英文名称: 4-isopropylidene-3,5-pyrazolidinedione
• 英文别名: 4-Isopropyliden-pyrazolidindion-(3.5)；4-isopropylidene-pyrazolidine-3,5-dione；4-propan-2-ylidenepyrazolidine-3,5-dione
• CAS: 89532-74-1
• 化学式: C₆H₈N₂O₂
• 分子量: 140.142
• InChiKey: GFZQWMQRTBMJEI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.4
• 重原子数：
  10
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  58.2
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  4-isopropylidene-3,5-pyrazolidinedione 在 双氧水 作用下， 以 乙醚 为溶剂， 以54%的产率得到2,2-dimethyl-1-oxa-5,6-diazaspiro[2,4]heptane-4,7-dione
  参考文献：
  名称：

  Synthesis and crystal structure of some 3,5-pyrazolidinediones

  摘要：

  Syntheses of various derivatives of 3,5-pyrazolidenedione are reported. This includes 4-arylidene (alkylidene or aralkylidene)-3,5-pyrazolidinediones, which on epoxidation gave unreported oxiranes. The syntheses of these derivatives were based on either the Knoevenagel reaction of carbonyl derivatives with 3,4-pyrazolidinedione or cyclization of arylidene (alkylidene) malonic acid hydrazide with glacial acetic acid. 4-Arylazo-3,5-pyrazolidinedione derivatives were also prepared by coupling of aryldiazonium salts with 3,5-pyrazolidinedione or cyclization of arylazomalonic acid hydrazide. Reduction of 4-benzylidene derivatives gave the corresponding benzyl derivatives. The structure of the new products was confirmed by elemental and spectral analyses and X-ray crystallography.

  DOI：

  10.1007/s10593-010-0527-9
• 作为产物：
  描述：

  吡唑烷-3,5-二酮 、 丙酮 以 甲醇 为溶剂， 反应 0.5h， 以76%的产率得到4-isopropylidene-3,5-pyrazolidinedione
  参考文献：
  名称：

  Synthesis and crystal structure of some 3,5-pyrazolidinediones

  摘要：

  Syntheses of various derivatives of 3,5-pyrazolidenedione are reported. This includes 4-arylidene (alkylidene or aralkylidene)-3,5-pyrazolidinediones, which on epoxidation gave unreported oxiranes. The syntheses of these derivatives were based on either the Knoevenagel reaction of carbonyl derivatives with 3,4-pyrazolidinedione or cyclization of arylidene (alkylidene) malonic acid hydrazide with glacial acetic acid. 4-Arylazo-3,5-pyrazolidinedione derivatives were also prepared by coupling of aryldiazonium salts with 3,5-pyrazolidinedione or cyclization of arylazomalonic acid hydrazide. Reduction of 4-benzylidene derivatives gave the corresponding benzyl derivatives. The structure of the new products was confirmed by elemental and spectral analyses and X-ray crystallography.

  DOI：

  10.1007/s10593-010-0527-9

文献信息

• METHOD OF PRODUCING A BISBENZODITHIOL COMPOUND
  申请人：Motoki Masuji

  公开号：US20090240067A1

  公开（公告）日：2009-09-24

  A method of producing a compound represented by formula (1), including: allowing 1,4-benzoquinone or 1,2-benzoquinone to react with a dithiocarbamate compound represented by formula (2) in a polar solvent: wherein R 1 and R 2 each independently represent a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group, R 1 and R 2 may be the same or different and may be combined with each other to form a ring, X represents an ion necessary to neutralize the charge of the molecule, m represents an integer of 1 to 2, n represents an integer of 1 to 2, M represents a hydrogen atom, a metal atom or a conjugate acid of a base, p represents an integer of 1 to 4, and q represents an integer of 1 to 4.

  一种生产由化学式（1）表示的化合物的方法，包括：允许1,4-苯醌或1,2-苯醌在极性溶剂中与由化学式（2）表示的二硫代氨基甲酸盐化合物发生反应：其中R1和R2各自独立地表示氢原子、烷基、芳基或杂环基，R1和R2可以相同也可以不同，并且可以结合在一起形成环，X表示中性化分子电荷所需的离子，m表示1至2的整数，n表示1至2的整数，M表示氢原子、金属原子或碱的共轭酸，p表示1至4的整数，q表示1至4的整数。
• HETEROCYCLIC COMPOUND, ULTRAVIOLET ABSORBENT AND COMPOSITION CONTAINING THE SAME
  申请人：Hanaki Naoyuki

  公开号：US20100210762A1

  公开（公告）日：2010-08-19

  A compound represented by formula (I-1): wherein R 21 , R 22 , R 23 and R 24 each independently represent a hydrogen atom or a monovalent substituent, with the proviso that compounds, in which R 21 , R 22 , R 23 and R 24 each are an alkylthio group, are excluded; R 21 and R 22 and/or R 23 and R 24 each may bond to each other to form a ring, with the proviso that compounds, in which the formed ring is a dithiol ring or a dithiolane ring, are excluded; R 25 and R 26 each independently represent a hydrogen atom or a monovalent substituent; X 21 , X 22 , X 23 and X 24 each independently represent a hetero atom; compounds, wherein R 21 , R 22 , R 23 and R 24 each represent a cyan group; X 21 , X 22 , X 23 and X 24 each represent a sulfur atom; and R 25 and R 26 each represent a hydroxyl group or a hydrogen atom, are excluded; and compounds, wherein R 21 and R 23 each represent a hydrogen atom; R 22 and R 24 each represent an arylcarbonyl group; X 21 , X 22 , X 23 and X 24 each represent a sulfur atom; and R 25 and R 26 each represent a hydroxyl group, are excluded; and an ultraviolet absorbent, which has molecular weight of 10,000 or less and molar extinction coefficient at the maximum absorption wavelength of the ultraviolet absorbent of 80,000 or more.
• US8039532B2
  申请人：——

  公开号：US8039532B2

  公开（公告）日：2011-10-18
• Synthesis and crystal structure of some 3,5-pyrazolidinediones
  作者：Saoud A. M. Metwally、Maisa I. Abdel Moneim、Yasser A. Elossely、Radwa I. Awad、Khaled Abou-Hadeed

  DOI：10.1007/s10593-010-0527-9

  日期：2010.8

  Syntheses of various derivatives of 3,5-pyrazolidenedione are reported. This includes 4-arylidene (alkylidene or aralkylidene)-3,5-pyrazolidinediones, which on epoxidation gave unreported oxiranes. The syntheses of these derivatives were based on either the Knoevenagel reaction of carbonyl derivatives with 3,4-pyrazolidinedione or cyclization of arylidene (alkylidene) malonic acid hydrazide with glacial acetic acid. 4-Arylazo-3,5-pyrazolidinedione derivatives were also prepared by coupling of aryldiazonium salts with 3,5-pyrazolidinedione or cyclization of arylazomalonic acid hydrazide. Reduction of 4-benzylidene derivatives gave the corresponding benzyl derivatives. The structure of the new products was confirmed by elemental and spectral analyses and X-ray crystallography.