4,5-dihydro-7H-pyrrolo[3,2,1-de]phenanthridin-7-one

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 喹啉及其衍生物
• 英文名称: 4,5-dihydro-7H-pyrrolo[3,2,1-de]phenanthridin-7-one
• 英文别名: 4H-pyrrolo[3,2,1-de]phenanthridin-7(5H)-one；dihydropyrrolophenanthridone；9-Azatetracyclo[7.6.1.02,7.012,16]hexadeca-1(15),2,4,6,12(16),13-hexaen-8-one
• 化学式: C₁₅H₁₁NO
• 分子量: 221.258
• InChiKey: KZAWWKZEWFACKI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  17
• 可旋转键数：
  0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.13
• 拓扑面积：
  20.3
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  7-溴二氢吲哚 在 palladium on activated charcoal 正丁基锂 、 1,1,2,2-四氟-1,2-二溴乙烷 、 硫酸 、 氢气 、 magnesium 作用下， 反应 9.25h， 生成 4,5-dihydro-7H-pyrrolo[3,2,1-de]phenanthridin-7-one
  参考文献：
  名称：

  An Oxazoline-Mediated Synthesis of the Pyrrolophenanthridine Alkaloids and Some Novel Derivatives

  摘要：

  An unsymmetrical biaryl coupling between the Grignard of N-benzyl-7-bromoindoline 25 and the appropriately substituted (o-methoxyaryl)oxazoline 15 leads to an intermediate biaryl which can be elaborated in one step to the 1H-pyrrolo[3,2,1-de]phenanthridine ring system. This simple two-step sequence provides general access to the pyrrolophenanthridine alkaloids 2-6.

  DOI：

  10.1021/jo951474x

文献信息

• A Pd-catalyzed, boron ester-mediated, reductive cross-coupling of two aryl halides to synthesize tricyclic biaryls
  作者：Zhilong Chen、Xiaodong Wang

  DOI：10.1039/c7ob01237c

  日期：——

  Tricyclic biaryls are important scaffold structures in many natural products and lead compounds in drug discovery. The formation of a biaryl unit is often the key step for the synthesis of tricyclic biaryls. Despite significant progress toward the synthesis of biaryl compounds in recent years, the direct cross-coupling of two different aryl halides is still challenging and robust methods are lacking

  三环联芳基在许多天然产物中是重要的支架结构，在药物发现中是先导化合物。联芳基单元的形成通常是合成三环联芳基的关键步骤。尽管近年来在合成联芳基化合物方面取得了重大进展，但是两种不同的芳基卤化物的直接交叉偶联仍然具有挑战性，并且缺乏可靠的方法。在本文中，我们报道了在钯催化剂和硼酸酯存在下两种不同的芳基卤化物的直接交叉偶联，这为合成三环联芳基提供了一种新的有用的互补方法。
• Expeditious Approach to Pyrrolophenanthridones, Phenanthridines, and Benzo[<i>c</i>]phenanthridines via Organocatalytic Direct Biaryl-Coupling Promoted by Potassium<i>tert</i>-Butoxide
  作者：Subhadip De、Sourabh Mishra、Badrinath N. Kakde、Dhananjay Dey、Alakesh Bisai

  DOI：10.1021/jo400890k

  日期：2013.8.16

  intramolecular homolytic aromatic substitution (HAS). Interestingly, this biaryl coupling also works in the presence of potassium tert-butoxide as sole promoter. On extending our approach further, we found that N-acyl 2-bromo-N-arylbenzylamines undergo a one-pot N-deprotection/biaryl coupling followed by oxidation, thus offering an expeditious route to the phenanthridine and benzo[c]phenanthridine skeletons. The

  在叔丁醇钾和有机分子作为催化剂存在的情况下，已经开发出一种涉及邻卤代N芳基苄胺的“无过渡金属”分子内联芳基偶合的方法。该反应似乎通过KO t Bu促进的分子内均溶芳族取代（HAS）进行。有趣的是，这种联芳基偶合在叔丁醇钾作为唯一促进剂的情况下也起作用。在进一步扩展我们的方法时，我们发现N-酰基2-溴-N-芳基苄胺经历了一锅N-脱保护/联芳基偶联，然后进行氧化，因此提供了通往菲啶和苯并[ c ]菲啶骨架的快速途径。该策略已被应用于简明的金莲花科生物碱的合成。oxoassoanine（1B），anhydrolycorinone（1D），5,6- dihydrobicolorine（2D），trispheridine（2B），和苯并[ C ^ ]菲啶生物碱dihydronitidine（图3b），dihydrochelerythidine（3D），dihydroavicine（3F），norni
• Construction of pyrrolophenanthridinone scaffolds mediated by samarium(II) diiodide and access to natural product synthesis
  作者：Kenji Suzuki、Hiroki Iwasaki、Reika Domasu、Naho Hitotsuyanagi、Yuka Wakizaka、Mao Tominaga、Naoto Kojima、Minoru Ozeki、Masayuki Yamashita

  DOI：10.1016/j.tet.2015.06.067

  日期：2015.8

  Pyrrolophenanthridinone derivatives including the natural products were readily synthesized by samarium(II)-mediated reductive cyclization of aryl radical onto a benzene ring under mild reaction conditions. This methodology was applied to the concise synthesis of anhydrolycorinone, a natural pyrrolophenanthridinone and a precursor of hippadine and anhydrolycorine.

  通过sa（II）介导的芳基自由基在温和的反应条件下的还原环化反应，可以轻松合成包括天然产物在内的吡咯并菲蒽酮衍生物。该方法学被用于简并合成脱水氢化可的松，天然的吡咯并菲咯烷酮和河马碱和脱水氢化可的碱的前体。
• Free radical reactions for heterocycle synthesis. Part 6: 2-Bromobenzoic acids as building blocks in the construction of nitrogen heterocycles
  作者：Wei Zhang、Georgia Pugh

  DOI：10.1016/s0040-4020(03)00381-8

  日期：2003.4

  A general method to construct a variety of nitrogen heterocycles is introduced. 2-Bromobenzoic acids or acid chlorides are used as the common building blocks to couple with appropriate nitrogen-containing compounds. Sequential aryl radical cyclizations including conjugate additions, spirocyclizations, homolytic and ipso aromatic substitutions, and 1,5-hydrogen atom transfers are employed to prepare

  介绍了构建各种氮杂环的一般方法。2-溴苯甲酸或酰氯被用作与适当的含氮化合物偶合的常见结构单元。顺序的芳基自由基环化包括共轭加成，螺环化，均溶和ipso芳族取代以及1,5-氢原子转移，可用于制备三环和四环异吲哚啉酮，苯并内酰胺，异喹啉酮，氮杂苯并异香豆素和桥连氮杂双环化合物。
• Intramolecular Direct Dehydrohalide Coupling Promoted by KO^<i>t</i>Bu: Total Synthesis of <i>Amaryllidaceae</i> Alkaloids Anhydrolycorinone and Oxoassoanine
  作者：Subhadip De、Santanu Ghosh、Subhajit Bhunia、Javeed Ahmad Sheikh、Alakesh Bisai

  DOI：10.1021/ol3019677

  日期：2012.9.7

  substitution (HAS) with aryl radicals has been developed in the presence of potassium tert-butoxide and an organic molecule as the catalyst. The methodology has been applied to a concise synthesis of Amaryllidaceae alkaloids viz. oxoassoanine (1b), anhydrolycorinone (1d), and other related structures. Interestingly, the method also works only in the presence of potassium tert-butoxide.

  在叔丁醇钾和有机分子作为催化剂的存在下，已经开发出通过分子内均溶芳族取代（HAS）与芳基的无过渡金属的分子内脱卤化氢偶联。该方法已应用到的简明综合石蒜生物碱即。氧代伴嘌呤（1b），脱水可可酮（1d）和其他相关结构。有趣的是，该方法也仅在叔丁醇钾存在下起作用。