1-hexanoyl-5-pentyldipyrromethane | 749923-26-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 1-hexanoyl-5-pentyldipyrromethane
• 英文别名: 1-Hexanone, 1-[5-[1-(1H-pyrrol-2-yl)hexyl]-1H-pyrrol-2-yl]-；1-[5-[1-(1H-pyrrol-2-yl)hexyl]-1H-pyrrol-2-yl]hexan-1-one
• CAS: 749923-26-0
• 化学式: C₂₀H₃₀N₂O
• 分子量: 314.471
• InChiKey: YCKASNIPGLKCAB-UHFFFAOYSA-N

物化性质

• 沸点：
  482.4±35.0 °C(Predicted)
• 密度：
  1.026±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.7
• 重原子数：
  23
• 可旋转键数：
  11
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.55
• 拓扑面积：
  48.6
• 氢给体数：
  2
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  1-hexanoyl-5-pentyldipyrromethane 在 N-溴代丁二酰亚胺(NBS) 作用下， 以 四氢呋喃 为溶剂， 反应 1.0h， 以85%的产率得到1-bromo-9-hexanoyl-5-pentyldipyrromethane
  参考文献：
  名称：

  Investigation of the Scope of a New Route to ABCD-Bilanes and ABCD-Porphyrins

  摘要：

  A new route to bilanes and porphyrins bearing four distinct meso substituents has been studied to elucidate the scope and gain entry to previously inaccessible compounds. The route entails (i) synthesis of a 1-bromo-19-acylbilane by acid-catalyzed condensation of a 1-acyldipyrromethane and a 9-bromodipyrromethane-1-carbinol and (ii) intramolecular cyclization of the 1-bromo-19-acylbilane in the presence of a metal salt (MgBr2, 3 mol equiv) and a non-nucleophilic base (DBU, 10 mol equiv) in a noncoordinating solvent (toluene) at 115 degrees C exposed to air to afford the corresponding magnesium(II) porphyrin. In this study, two sets of bilanes were initially prepared to explore substituent effects. In the first set, all bilanes vary only in the nature of the substituent at the 10-position. In the second set, all bilanes vary only in the nature of the substituent attached to the acyl unit (the 20-position). The substituents examined at the 10- and 20-positions include alkyl, aryl (electron-rich, electron-deficient, hindered), heteroaryl, ester, or no substituent (-H). The bilanes were obtained in 35-87% yield, and the target porphyrins in up to 60% yield. Further study of the scope focused on bilanes and porphyrins bearing three heterocyclic substituents (o-, m-, p-pyridyl) or four alkyl groups (ethyl, propyl, butyl, pentyl), in which case microwave irradiation was used for the porphyrin-forming step. Altogether, 17 bilanes and 19 porphyrins were prepared and characterized. In summary, the new route provides access to meso-substituted bilanes and porphyrins for which access is limited via other methods.

  DOI：

  10.1021/jo8010396
• 作为产物：
  描述：

  10-(9-borabicyclo[3.3.1]non-9-yl)-1-hexanoyl-5-pentyldipyrromethane 在 戊醇 作用下， 以 四氢呋喃 为溶剂， 反应 1.0h， 以82%的产率得到1-hexanoyl-5-pentyldipyrromethane
  参考文献：
  名称：

  Boron-Complexation Strategy for Use with 1-Acyldipyrromethanes

  摘要：

  1-Acyldipyrromethanes are important precursors in rational syntheses of diverse porphyrinic compounds. 1-Acyldipyrromethanes are difficult to purify, typically streaking upon chromatography and giving amorphous powders upon attempted crystallization. A solution to this problem has been achieved by reacting the 1-acyldipyrromethane with a dialkylboron triflate (e.g., Bu2B-OTf or 9-BBN-OTf) to give the corresponding B,B-dialkyl-B-(1-acyldipyrromethane)boron(III) complex. The reaction is selective for a 1-acyldipyrromethane in the presence of a dipyrromethane. The 1-acyldipyrromethane-boron complexes are stable to routine handling, are soluble in common organic solvents, are hydrophobic, crystallize readily, and chromatograph without streaking. The 1-acyldipyrromethane can be liberated in high yield from the boron complex upon treatment with 1-pentanol. Alternatively, the 1-acyldipyrromethane-boron complex can be used in the formation of a trans-A(2)B(2)-porphyrin. In summary, the boron-complexation strategy has broad scope and greatly facilitates the isolation of 1-acyldipyrromethanes.

  DOI：

  10.1021/jo0492620

文献信息

• Rational or Statistical Routes from 1-Acyldipyrromethanes to <i>meso</i>-Substituted Porphyrins. Distinct Patterns, Multiple Pyridyl Substituents, and Amphipathic Architectures
  作者：Dilek Kiper Dogutan、Marcin Ptaszek、Jonathan S. Lindsey

  DOI：10.1021/jo800588n

  日期：2008.8.1

  New methodology is described for the synthesis of porphyrins bearing four (A4, cis-A2B2, cis-ABC2, trans-A2B2) or fewer (A, cis-AB, cis-A2, trans-A2) meso substituents. The method entails condensation of two 1-acyldipyrromethanes in the presence of a metal salt (MgBr2, 3 mol equiv) and a noncoordinating base (DBU, 10 mol equiv) in a noncoordinating solvent (toluene) with heating (conventional or microwave

  描述了一种新的合成方法，用于合成带有四个（A 4，顺式-A 2 B 2，顺式-ABC 2，反式-A 2 B 2）或更少（A，顺式-AB，顺式-A 2，反式- A 2）内消旋取代基。该方法需要在金属盐（MgBr 2，3摩尔当量）和非配位碱（DBU，10摩尔当量）在非配位溶剂（甲苯）中加热（常规或微波辐射）并暴露于空气中。反式-A 2 B 2-或反式-A 2-卟啉的合理合成是通过两个相同的1-酰基二吡咯甲烷的缩合反应实现的。各种内消旋的统计综合通过两个不相同的1-酰基吡咯烷甲烷的缩合获得取代的卟啉。两种途径都具有吸引人的特征，包括（1）无加扰；（2）高浓度（100 mM）的大环形成步骤中的高收率（最高60％）；（3）合理的范围（芳基，杂芳基，烷基或无取代基），（4）微波辐射反应时间短（〜2 h），（5）容易进行脱金属的卟啉镁产物和（6）色谱纯化简便。统计途径的主要优点是获得了顺式取代的卟啉，而没有相应的反式异构体。例如，A