{5-[(5-Bromo-1H-pyrrol-2-yl)-pentafluorophenyl-methyl]-1H-pyrrol-2-yl}-pentafluorophenyl-methanol | 475560-28-2

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: {5-[(5-Bromo-1H-pyrrol-2-yl)-pentafluorophenyl-methyl]-1H-pyrrol-2-yl}-pentafluorophenyl-methanol
• 英文别名: [5-[(5-bromo-1H-pyrrol-2-yl)-(2,3,4,5,6-pentafluorophenyl)methyl]-1H-pyrrol-2-yl]-(2,3,4,5,6-pentafluorophenyl)methanol
• CAS: 475560-28-2
• 化学式: C₂₂H₉BrF₁₀N₂O
• 分子量: 587.214
• InChiKey: AHOLLSIONHUPSS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.8
• 重原子数：
  36
• 可旋转键数：
  5
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.09
• 拓扑面积：
  51.8
• 氢给体数：
  3
• 氢受体数：
  11

反应信息

• 作为反应物：
  描述：

  {5-[(5-Bromo-1H-pyrrol-2-yl)-pentafluorophenyl-methyl]-1H-pyrrol-2-yl}-pentafluorophenyl-methanol 在 2,2,6,6-四甲基哌啶 、 zinc diacetate 、 silver trifluoromethanesulfonate 、 三氟乙酸 作用下， 以 乙腈 为溶剂， 反应 24.5h， 生成 Zn(II)-17,18-dihydro-18,18-dimethyl-5,10-bis(pentafluorophenyl)porphyrin
  参考文献：
  名称：

  Synthesis of Meso-Substituted Chlorins via Tetrahydrobilene-a Intermediates

  摘要：

  Chlorin building blocks incorporating a geminal dimethyl group in the reduced ring and synthetic handles in specific patterns at the perimeter of the macrocycle are expected to have utility in biomimetic and materials chemistry. A prior route employed condensation of a dihydrodipyrrin (Western half) and a bromodipyrromethane-monocarbinol (Eastern half), followed by oxidative cyclization of the putative dihydrobilene-alpha to form the meso-substituted zinc chlorin in yields of similar to 10%. The limited stability of the dihydrodipyrrin precluded study of the chlorin-forming process. We now have refined this methodology. A tetrahydrodipyrrin Western half (2,3,4,5-tetrahydro-1,3,3-trimethyldipyrrin) has been synthesized and found to be quite stable. The condensation of the Western half and an Eastern half (100 mM each) proceeded smoothly in CH3CN containing 100 mM TFA at room temperature for 30 min. The resulting linear tetrapyrrole, a 2,3,4,5-tetrahydrobilene-alpha, also is quite stable, enabling study of the conversion to chlorin. Refined conditions for the oxidative cyclization were found to include the following: the tetrahydrobilene-alpha (10 mM), AgTf (3-5 molar equiv), Zn(OAc)(2) (15 molar equiv), and 2,2,6,6-tetramethylpiperidine (15 molar equiv) in CH3CN at reflux exposed to air for 4-6 h, affording the zinc chlorin. The chlorin-forming process could be implemented in either a two-flask process or a one-flask process. The two-flask process was applied to form six zinc chlorins bearing substituents such as pentafluorophenyl, 3,5-di-tert-butylphenyl, TMS-ethyl benzoate, iodophenyl, or ethynylphenyl (deprotection of the TMS-ethynyl group occurred during the oxidative cyclization process). The stepwise yields (isolated) for the condensation and oxidative cyclization processes forming the tetrahydrobilene and zinc chlorin were 32-72% and 27-62%, respectively, giving overall yields of zinc chlorin from the Eastern and Western halves of 12-45%. Taken together, the refinements introduced enable 100-mg quantities of chlorin building blocks to be prepared in a facile and rational manner.

  DOI：

  10.1021/jo0104835
• 作为产物：
  描述：

  五氟苯甲酰氯 在 sodium tetrahydroborate 、 N-溴代丁二酰亚胺(NBS) 、 乙基溴化镁 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 甲苯 为溶剂， 反应 2.25h， 生成 {5-[(5-Bromo-1H-pyrrol-2-yl)-pentafluorophenyl-methyl]-1H-pyrrol-2-yl}-pentafluorophenyl-methanol
  参考文献：
  名称：

  合理合成中取代的二氢卟酚结构单元。

  摘要：

  绿藻素为植物的光合作用提供了基础，但是合成模型系统通常由于没有合适的二氢卟酚结构单元而使用卟啉作为替代物。我们改编了由Battersby率先开发的路线，以获取带有两个内消旋取代基的二氢卟酚，一个可锁定二氢卟酚加氢水平的双甲基二甲基基团，以及没有侧接的中消旋和β取代基。该合成涉及东半部和西半部的收敛连接。从吡咯-2-甲醛中分四个步骤合成了3,3-二甲基-2,3-二氢联吡啶（西半部）。溴代二吡咯甲烷甲醇（东部一半）的制备方法是依次进行酰化和溴化5-取代的二吡咯甲烷，然后还原。通过两瓶酸催化缩合反应，然后进行金属介导的氧化环化反应，可以形成氯霉素。迄今为止，后一种反应是用铜模板进行的。此多步骤过程的条件研究导致了无铜条件（乙酸锌，AgIO（3）和哌啶在甲苯中于80摄氏度下持续2小时）。获得的二氢卟酚锌的收率约为10％，可以很容易地脱金属，得到相应的游离碱二氢卟酚。合成方法与一系列内消旋取代基（对甲苯基，三甲苯基，五氟苯基，4-

  DOI：

  10.1021/jo991942t

文献信息

• Rational Synthesis of Meso-Substituted Chlorin Building Blocks
  作者：Jon-Paul Strachan、Donal F. O'Shea、Thiagarajan Balasubramanian、Jonathan S. Lindsey

  DOI：10.1021/jo991942t

  日期：2000.5.1

  formation is achieved by a two-flask process of acid-catalyzed condensation followed by metal-mediated oxidative cyclization. The latter reaction has heretofore been performed with copper templates. Investigation of conditions for this multistep process led to copper-free conditions (zinc acetate, AgIO(3), and piperidine in toluene at 80 degrees C for 2 h). The zinc chlorin was obtained in yields of approximately

  绿藻素为植物的光合作用提供了基础，但是合成模型系统通常由于没有合适的二氢卟酚结构单元而使用卟啉作为替代物。我们改编了由Battersby率先开发的路线，以获取带有两个内消旋取代基的二氢卟酚，一个可锁定二氢卟酚加氢水平的双甲基二甲基基团，以及没有侧接的中消旋和β取代基。该合成涉及东半部和西半部的收敛连接。从吡咯-2-甲醛中分四个步骤合成了3,3-二甲基-2,3-二氢联吡啶（西半部）。溴代二吡咯甲烷甲醇（东部一半）的制备方法是依次进行酰化和溴化5-取代的二吡咯甲烷，然后还原。通过两瓶酸催化缩合反应，然后进行金属介导的氧化环化反应，可以形成氯霉素。迄今为止，后一种反应是用铜模板进行的。此多步骤过程的条件研究导致了无铜条件（乙酸锌，AgIO（3）和哌啶在甲苯中于80摄氏度下持续2小时）。获得的二氢卟酚锌的收率约为10％，可以很容易地脱金属，得到相应的游离碱二氢卟酚。合成方法与一系列内消旋取代基（对甲苯基，三甲苯基，五氟苯基，4-
• Synthesis of Meso-Substituted Chlorins via Tetrahydrobilene-<i>a</i> Intermediates
  作者：Masahiko Taniguchi、Doyoung Ra、Guoning Mo、Thiagarajan Balasubramanian、Jonathan S. Lindsey

  DOI：10.1021/jo0104835

  日期：2001.11.1

  Chlorin building blocks incorporating a geminal dimethyl group in the reduced ring and synthetic handles in specific patterns at the perimeter of the macrocycle are expected to have utility in biomimetic and materials chemistry. A prior route employed condensation of a dihydrodipyrrin (Western half) and a bromodipyrromethane-monocarbinol (Eastern half), followed by oxidative cyclization of the putative dihydrobilene-alpha to form the meso-substituted zinc chlorin in yields of similar to 10%. The limited stability of the dihydrodipyrrin precluded study of the chlorin-forming process. We now have refined this methodology. A tetrahydrodipyrrin Western half (2,3,4,5-tetrahydro-1,3,3-trimethyldipyrrin) has been synthesized and found to be quite stable. The condensation of the Western half and an Eastern half (100 mM each) proceeded smoothly in CH3CN containing 100 mM TFA at room temperature for 30 min. The resulting linear tetrapyrrole, a 2,3,4,5-tetrahydrobilene-alpha, also is quite stable, enabling study of the conversion to chlorin. Refined conditions for the oxidative cyclization were found to include the following: the tetrahydrobilene-alpha (10 mM), AgTf (3-5 molar equiv), Zn(OAc)(2) (15 molar equiv), and 2,2,6,6-tetramethylpiperidine (15 molar equiv) in CH3CN at reflux exposed to air for 4-6 h, affording the zinc chlorin. The chlorin-forming process could be implemented in either a two-flask process or a one-flask process. The two-flask process was applied to form six zinc chlorins bearing substituents such as pentafluorophenyl, 3,5-di-tert-butylphenyl, TMS-ethyl benzoate, iodophenyl, or ethynylphenyl (deprotection of the TMS-ethynyl group occurred during the oxidative cyclization process). The stepwise yields (isolated) for the condensation and oxidative cyclization processes forming the tetrahydrobilene and zinc chlorin were 32-72% and 27-62%, respectively, giving overall yields of zinc chlorin from the Eastern and Western halves of 12-45%. Taken together, the refinements introduced enable 100-mg quantities of chlorin building blocks to be prepared in a facile and rational manner.