dimethyl 2,4-bis(4-fluorobenzoyl)pentanedioate | 1476783-14-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: dimethyl 2,4-bis(4-fluorobenzoyl)pentanedioate
• 英文别名: Dimethyl 2,4-bis(4-fluorobenzoyl)pentanedioate
• CAS: 1476783-14-8
• 化学式: C₂₁H₁₈F₂O₆
• 分子量: 404.367
• InChiKey: XWZFXMMCOZNHJZ-UHFFFAOYSA-N

物化性质

• 沸点：
  525.0±50.0 °C(predicted)
• 密度：
  1.295±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  29
• 可旋转键数：
  10
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.24
• 拓扑面积：
  86.7
• 氢给体数：
  0
• 氢受体数：
  8

反应信息

• 作为产物：
  描述：

  methyl 2-(4-fluorobenzoyl)acrylate 在 乙二胺 作用下， 以 1,4-二氧六环 为溶剂， 反应 0.42h， 以94%的产率得到dimethyl 2,4-bis(4-fluorobenzoyl)pentanedioate
  参考文献：
  名称：

  二胺介导的森田-贝利斯-希尔曼酮的降解性二聚。

  摘要：

  在伯二胺存在下，观察到森田-贝利斯-希尔曼酮的降解性二聚化。反应迅速进行以产生亚甲基桥连的1，3-二羰基化合物。简短的机械研究暗示了曼尼奇的后反应是这一转变的关键步骤。

  DOI：

  10.1039/c9cc10068g

文献信息

• Copper(ii)-catalyzed C–H (sp3) oxidation and C–N cleavage: synthesis of methylene-bridged compounds using TMEDA as a carbon source in water
  作者：Dan Zhao、Yue Wang、Min-Xue Zhu、Qi Shen、Lei Zhang、Yun Du、Jian-Xin Li

  DOI：10.1039/c3ra40695d

  日期：——

  A green, simple, and efficient protocol for the selective methylenation via CuCl2/oxygen-mediated C–H (sp3) oxidation and C–N cleavage using tetramethylethylenediamine (TMEDA) as a carbon source has been developed. The reactions were achieved in green solvent water under atmospheric conditions. The protocol exhibited a broad substrate scope including indoles, anilines, pyrroles and 1,3-dicarbonyls. Furthermore, two key intermediates of the reaction were successfully identified and the mechanism was explored.

  以四甲基乙二胺（TMEDA）为碳源，通过 CuCl2/氧气介导的 CâH (sp3) 氧化和 CâN 裂解进行选择性亚甲基化的绿色、简单而高效的方案已经开发出来。反应在大气条件下的绿色溶剂水中进行。该方案的底物范围很广，包括吲哚、苯胺、吡咯和 1,3-二羰基。此外，还成功鉴定了反应的两个关键中间体，并探索了反应机理。
• Selectfluor facilitated bridging of indoles to bis(indolyl)methanes using methyl <i>tert</i>-butyl ether as a new methylene precursor
  作者：Jiang Jin、Yinghua Li、Shiqun Xiang、Weibin Fan、Shiwei Guo、Deguang Huang

  DOI：10.1039/d1ob00120e

  日期：——

  A novel, green and efficient method is developed for the synthesis of methylene bridged bis(indolyl)methanes in good to excellent yields. The reaction employs methyl tert-butyl ether (MTBE) as the methylene source and selectfluor as an oxidizing agent. The scope and versatility of the methods have been successfully demonstrated with 48 examples. The metal-free transformation process is suitable for

  开发了一种新颖，绿色，高效的方法，以高产率至优异产率合成亚甲基桥连的双（吲哚基）甲烷。该反应使用甲基叔丁基醚（MTBE）作为亚甲基源，并选择fluor作为氧化剂。该方法的范围和多功能性已通过48个实例成功证明。无金属转化工艺适合规模化生产。根据实验研究结果，提出了一种选择荧光促进氧化反应的机理。
• Metal-Free Csp3–N Bond Cleavage of Amides Using tert-Butyl Hydroperoxide as Oxidant
  作者：Hu Cai、Shengmei Guo、Zheng Zhu、Lin Lu、Wenbiao Zhang、Jiuhan Gong

  DOI：10.1055/s-0034-1379879

  日期：——

  A mild and efficient protocol for the metal-free C-N bond-cleavage of amides has been developed. The methodology employs iodine as a catalyst to cleave the C(Me)-N bond of dimethylformamide or dimethylacetamide, providing novel access to methylene-bridged bis-1,3-dicarbonyl compounds instead of enol carbamates in the presence of tert-butyl hydroperoxide.
• Diamine-mediated degradative dimerisation of Morita–Baylis–Hillman ketones
  作者：Ajit Kumar Jha、Anju Kumari、Srinivasan Easwar

  DOI：10.1039/c9cc10068g

  日期：——

  A degradative dimerisation of Morita-Baylis-Hillman ketones was observed in the presence of a primary diamine. The reaction proceeded swiftly to produce methylene-bridged 1,3-dicarbonyl compounds. A brief mechanistic investigation alluded to a retro-Mannich reaction as the key step of the transformation.

  在伯二胺存在下，观察到森田-贝利斯-希尔曼酮的降解性二聚化。反应迅速进行以产生亚甲基桥连的1，3-二羰基化合物。简短的机械研究暗示了曼尼奇的后反应是这一转变的关键步骤。