2‐isopropyl‐5‐phenyl‐1H‐pyrrole | 13713-07-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯
• 英文名称: 2‐isopropyl‐5‐phenyl‐1H‐pyrrole
• 英文别名: 2-isopropyl-5-phenyl-1H-pyrrole；2-isopropyl-5-phenyl-pyrrole；2-phenyl-5-propan-2-yl-1H-pyrrole
• CAS: 13713-07-0
• 化学式: C₁₃H₁₅N
• 分子量: 185.269
• InChiKey: VWHNHZCURHSPOX-UHFFFAOYSA-N

物化性质

• 熔点：
  53-54 °C
• 沸点：
  330.5±21.0 °C(Predicted)
• 密度：
  1.011±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.5
• 重原子数：
  14
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.23
• 拓扑面积：
  15.8
• 氢给体数：
  1
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  2‐isopropyl‐5‐phenyl‐1H‐pyrrole 、 3-chloro-3-phenyl-3H-diazirine 在 sodium carbonate 作用下， 以 乙腈 为溶剂， 反应 12.0h， 生成 2-(iso-propyl)-3,6-diphenylpyridine 、 6-isopropyl-2,3-diphenylpyridine
  参考文献：
  名称：

  氯二氮嗪促进碳原子插入吡咯和吲哚

  摘要：

  在这里，我们报告了一种反应，该反应通过将芳基羰基阳离子等价物分别插入吡咯和吲哚核心选择性地产生 3-芳基吡啶和喹啉基序。通过使用 α-chlorodiazirines 作为相应氯卡宾的热前体，可以修改作为母体 Ciamician-Denstedt 重排核心的传统基于卤仿的协议，以直接提供 3-（杂）芳基吡啶和喹啉。通过氧化可商购的脒鎓盐可方便地在一个步骤中制备氯二氮嗪。检测了作为吡咯取代模式函数的选择性，并提出了基于空间效应的预测模型，DFT 计算支持确定选择性的环丙烷化步骤。计算出人意料地表明，环丙烷化的立体化学对随后形成吡啶核心的电环开环几乎没有影响，这是由于补偿性同芳族稳定化抵消了轨道控制的扭矩选择性效应。通过喹啉的制备和药学相关吡咯的骨架编辑进一步证明了这种骨架转化的效用。

  DOI：

  10.1021/jacs.1c06287
• 作为产物：
  描述：

  L-缬氨醇 、 苯丙酮 在 dichlorobis(dicyclohexylphosphinomethylpyridine)-ruthenium (II) 、 potassium tert-butylate 作用下， 以 neat (no solvent) 为溶剂， 反应 24.0h， 以70%的产率得到2‐isopropyl‐5‐phenyl‐1H‐pyrrole
  参考文献：
  名称：

  The Dual Role of Ruthenium and Alkali Base Catalysts in Enabling a Conceptually New Shortcut to N-Unsubstituted Pyrroles through Unmasked α-Amino Aldehydes

  摘要：

  A virtually salt-free and straightforward bimolecular assembly giving N-unsubstituted pyrroles through fully unmasked a-amino aldehydes, which was enabled by the dual effects of a catalytic ruthenium complex and an alkali metal base, is reported. Either solvent-free or acceptorless dehydrogenation facilitates high atom, step, and pot economy, which are otherwise difficult to achieve in multistep operations involving protection/deprotection.

  DOI：

  10.1021/ol4001262

文献信息

• Cobalt-catalyzed acceptorless dehydrogenative coupling of aminoalcohols with alcohols: direct access to pyrrole, pyridine and pyrazine derivatives
  作者：Siba P. Midya、Vinod G. Landge、Manoj K. Sahoo、Jagannath Rana、Ekambaram Balaraman

  DOI：10.1039/c7cc07427a

  日期：——

  example is reported of a new, molecularly defined SNS-cobalt(II) catalyst for the acceptorless dehydrogenative coupling (ADC) of unprotected amino alcohols with secondary alcohols leading to pyrrole and pyridine derivatives.

  在这里，第一个实例报道了一种新的，分子定义的SNS-钴（II）催化剂，用于未保护的氨基醇与仲醇的无受体脱氢偶联（ADC），从而生成吡咯和吡啶衍生物。
• PHOSPHINE FREE COBALT BASED CATALYST, PROCESS FOR PREPARATION AND USE THEREOF
  申请人：COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH

  公开号：US20200384451A1

  公开（公告）日：2020-12-10

  The present invention discloses a phosphine free cobalt based catalyst of formula (I) and a process for preparation thereof. The present invention further discloses a process for the synthesis of aromatic heterocyclic compounds of formula (II) and pyrazine derivative using the phosphine free cobalt based catalyst of formula (I).

  本发明公开了一种无膦钴基催化剂的化学式(I)及其制备方法。本发明还公开了一种使用无膦钴基催化剂的化学式(I)合成芳香杂环化合物的方法(II)和吡嗪衍生物的方法。
• A Versatile Ru(II)-NNP Complex Catalyst for the Synthesis of Multisubstituted Pyrroles and Pyridines
  作者：Huining Chai、Liandi Wang、Tingting Liu、Zhengkun Yu

  DOI：10.1021/acs.organomet.7b00774

  日期：2017.12.26

  A pincer-type Ru(II)-NNP complex bearing a pyrazolyl-(NH-PtBu2)-pyridine ligand was synthesized and structurally characterized by NMR, IR, elemental analysis, and X-ray single-crystal crystallographic determinations, which efficiently catalyzed the synthesis of multisubstituted pyrroles and pyridines by means of the reactions of secondary alcohols and β- or γ-amino alcohols through deoxygenation and

  合成了带有吡唑基-（NH-P t Bu 2）-吡啶配体的钳型Ru（II）-NNP络合物，并通过NMR，IR，元素分析和X射线单晶晶体学测定对其结构进行了表征，通过仲醇与β-或γ-氨基醇的脱氧反应以及选择性C–N和C–C键的形成，有效地催化了多取代吡咯和吡啶的合成。偶联反应以0.3mol％的催化剂负载量和容许的各种官能团进行。本工作提供了一种从容易获得的配体中构建高活性过渡金属配合物催化剂的替代方法。
• General Transition Metal-Free Synthesis of NH-Pyrroles from Secondary Alcohols and 2-Aminoalcohols
  作者：Besir Krasniqi、Kayle Geerts、Wim Dehaen

  DOI：10.1021/acs.joc.8b03215

  日期：2019.5.3

  A novel, transition metal-free and one-pot methodology to synthesize various substituted NH-pyrroles from readily available building blocks such as secondary alcohols and 2-aminoalcohols is described. The process is based on the venerable Oppenauer–Woodward oxidation, which uses benzophenone as an inexpensive reagent to achieve oxidation of secondary alcohols under mild condition to ketones, further

  描述了一种新颖的，无过渡金属且一锅法的方法，该方法可从容易获得的结构单元（例如仲醇和2-氨基醇）中合成各种取代的NH-吡咯。该工艺基于古老的Oppenauer-Woodward氧化技术，该技术使用二苯甲酮作为廉价试剂，可在中等条件下将仲醇氧化成酮，再与氨基醇原位缩合，然后氧化环化成目标吡咯环。该反应在碱性条件下发生，具有广泛的底物范围，并具有对敏感官能团的良好耐受性。该方法可用于合成各种取代的吡咯，用作广泛应用的起始原料。
• A sustainable catalytic pyrrole synthesis
  作者：Stefan Michlik、Rhett Kempe

  DOI：10.1038/nchem.1547

  日期：2013.2

  The pyrrole heterocycle is a prominent chemical motif and is found widely in natural products, drugs, catalysts and advanced materials. Here we introduce a sustainable iridium-catalysed pyrrole synthesis in which secondary alcohols and amino alcohols are deoxygenated and linked selectively via the formation of C–N and C–C bonds. Two equivalents of hydrogen gas are eliminated in the course of the reaction, and alcohols based entirely on renewable resources can be used as starting materials. The catalytic synthesis protocol tolerates a large variety of functional groups, which includes olefins, chlorides, bromides, organometallic moieties, amines and hydroxyl groups. We have developed a catalyst that operates efficiently under mild conditions. Pyrroles are a highly important class of compounds with a wide variety of applications in biochemistry, pharmacy and materials science. Here, an iridium-catalysed synthesis of pyrroles is described, starting from renewable resources, alcohols that may be derived from lignocellulosic feedstocks and amino alcohols. The reaction proceeds by a condensation reaction that liberates two equivalents of hydrogen gas.

  吡咯杂环是一种突出的化学基元，广泛存在于天然产物、药物、催化剂和先进材料中。本文介绍了一种可持续的铱催化吡咯合成方法，该方法通过形成C–N和C–C键，选择性地对二级醇和氨基醇进行脱氧耦合。反应过程中消除了两当量的氢气，并且可以完全使用可再生资源衍生的醇作为起始原料。催化合成方案能够耐受多种官能团，包括烯烃、氯化物、溴化物、有机金属基团、胺和羟基等。我们开发了一种在温和条件下高效运作的催化剂。吡咯是一类具有广泛应用的重要化合物，涉及生物化学、药物学和材料科学等领域。本文描述了一种从可再生资源出发，铱催化的吡咯合成方法，起始原料为来自木质纤维素原料的醇和氨基醇。该反应通过缩合反应释放两当量的氢气。