2-(cyclohexylethynyl)quinoline-3-carbaldehyde | 1235868-27-5

• 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: 2-(cyclohexylethynyl)quinoline-3-carbaldehyde
• CAS: 1235868-27-5
• 化学式: C₁₈H₁₇NO
• 分子量: 263.339
• InChiKey: ODQWKORNRXJHRQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.98
• 重原子数：
  20.0
• 可旋转键数：
  1.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  29.96
• 氢给体数：
  0.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  2-(cyclohexylethynyl)quinoline-3-carbaldehyde 在 sodium azide 、 silver trifluoromethanesulfonate 作用下， 以 乙腈 为溶剂， 反应 24.0h， 以65%的产率得到1-azido-3-cyclohexyl-1H-pyrano[4,3-b]quinoline
  参考文献：
  名称：

  在[3 + 2]环加成反应中邻烷基炔醛的化学选择性叠氮化和随后的斯托丁格反应：获得苯并萘啶/萘啶类化合物

  摘要：

  描述了一种在温和的反应条件下，在叠氮化钠存在下，通过邻炔基醛的亲电环化化学合成功能化的叠氮基-吡喃喹啉和叠氮基-碘吡喃并喹啉的有效串联方法。机理研究证实，叠氮化物在炔烃上的[3 + 2]环加成反应中，叠氮化物对pyr中间体的亲核攻击可形成叠氮基-吡喃喹啉。通过Staudinger反应将合成的叠氮基-吡喃喹啉转化为苯并萘啶。氘标记实验和X射线晶体学研究为该机理提供了支持。

  DOI：

  10.1021/acs.joc.7b01016
• 作为产物：
  描述：

  环己基乙炔 在 bis-triphenylphosphine-palladium(II) chloride 、 三乙胺 作用下， 生成 2-(cyclohexylethynyl)quinoline-3-carbaldehyde
  参考文献：
  名称：

  Silver-Catalyzed Tandem Synthesis of Naphthyridines and Thienopyridines via Three-Component Reaction

  摘要：

  An efficient approach for the silver-catalyzed regioselective tandem synthesis of highly functionalized 1,2-dihydorbenzo[1,6]naphthyridines 6a-z and 7a-e by the reaction of ortho-alkynylaldehydes 3a-n with amines 4a-d and ketones 5a-c/active methylene compounds 5d-g, under mild reaction conditions, is described. The scope of the developed chemistry was successfully extended for the direct synthesis of 1,2-dihydorbenzo[4,5]thieno[2,3-c]pyridines 8a-e, which is known as the sulfur analogue of beta-carbolines. Naphthyridines 6a-z and thienopyridines 8a-e were obtained via dual activation concept using L-proline as organocatalyst; however, naphthyridines 7a-e were synthesized without using organocatalyst. The reaction shows selective N-C bond formation on the more electrophilic alkynyl carbon, resulting in the regioselective 6-endo-digcyclized products. Reactivity behavior of electron-deficient and electron-rich ortho-alkynylaldehydes in the synthesis of naphthyridines and thienopyridine by three-component reaction is supported by the control experiment.

  DOI：

  10.1021/jo400400c

文献信息

• Site-Selective Electrophilic Cyclization and Subsequent Ring-Opening: A Synthetic Route to Pyrrolo[1,2-<i>a</i>]quinolines and Indolizines
  作者：Trapti Aggarwal、Sonu Kumar、Devendra K. Dhaked、Rakesh K. Tiwari、Prasad V. Bharatam、Akhilesh K. Verma

  DOI：10.1021/jo3015374

  日期：2012.10.5

  An efficient strategy for the synthesis of pyrrolo[1,2-a]quinolines and indolizines from pyranoquinolines via site-selective electrophilic cyclization and subsequent opening of pyran ring using silver/iodine under mild reaction conditions is described. This approach involves the preferential attack of the pyridyl nitrogen over aryl ring and leads to the formation of 5-endo-dig cyclized products. Quantum

  描述了一种通过位点选择性亲电环化从吡喃并喹啉合成吡咯并[1,2- a ]喹啉和吲哚嗪的有效策略，随后在温和的反应条件下使用银/碘打开吡喃环。这种方法涉及的吡啶基的氮的优先攻击过的芳环，并导致5-地层内切-挖环化产物。C–N（ΔE a = 9.01 kcal / mol）和C–C（ΔE a为了使观察到的位点选择性合理化，进行＝ 31.31kcal / mol）的键形成。通过X射线晶体学研究证实了产物的结构。通过Pd催化的交叉偶联反应，通过亲电碘化反应生成的碘取代的化合物进一步多样化。
• Silver-catalyzed regioselective synthesis of acridines, quinolines, and naphthalenes from 3-(2-alkynyl)aryl-β-ketoesters
  作者：Satya Prakash Shukla、Rakesh Tiwari、Akhilesh Kumar Verma

  DOI：10.1016/j.tet.2012.08.068

  日期：2012.11

  general synthetic method for a wide range of medicinally useful 2-carboxylate derivatives of acridinols, quinolinols, and naphthalenols has been developed via silver-catalyzed electrophilic cyclization of 3-(2-alkynyl)aryl-β-ketoesters. The designed reaction involved selective C–C bond formation on more electrophilic alkynyl carbon, which resulted in the regioselective 6-endo-dig cyclized product, as confirmed

  通过银催化的3-（2-炔基）芳基-β-酮酸酯的亲电子环化反应，已经开发了一种简便，有效且通用的合成方法，用于各种医学上有用的a啶醇，喹啉醇和萘酚的2-羧酸酯衍生物。所设计的反应涉及在多个电子炔基碳选择性C-C键的形成，这就造成了区域选择性6-内-挖环化产物，通过X射线晶体学研究证实。进行氘标记实验以支持所提出的机制。合成方法可适应炔烃上广泛的官能团变异，这对结构和生物活性评估非常有利。
• Iodine-Mediated Solvent-Controlled Selective Electrophilic Cyclization and Oxidative Esterification of <i>o</i>-Alkynyl Aldehydes: An Easy Access to Pyranoquinolines, Pyranoquinolinones, and Isocumarins
  作者：Akhilesh K. Verma、Vineeta Rustagi、Trapti Aggarwal、Amit P. Singh

  DOI：10.1021/jo101526b

  日期：2010.11.19

  provides pyrano[4,3-b]quinolines 4a−f, via formation of cyclic iodonium intermediate Q; however, using alcohols as a solvent as well as nucleophile, o-alkynyl esters 5a−y were obtained selectively in good to excellent yields via formation of hypoiodide intermediate R. Subsequently, o-alkynyl esters were converted in to pyranoquinolinones 6a−i and isocoumarin 6j by electrophilic iodocyclization. This

  描述了碘在邻炔基醛的亲电碘环化中在不同溶剂中的化学选择性行为。与CH 2 Cl 2中的I 2与适当的亲核试剂反应生成邻炔基醛3a - t可以通过形成环碘鎓中间体Q生成吡喃并[4,3- b ]喹啉4a - f；但是，使用醇和亲核试剂作为溶剂，通过形成次碘化物中间体，选择性地以良好或优异的收率获得了邻炔基酯5a - y。[R 。随后，通过亲电碘环化将邻炔基酯转化为吡喃喹啉酮6a - i和异香豆素6j。这种发达的氧化酯化反应为从醛3n - p化学选择性合成酯5q - u而不氧化底物中存在的伯醇提供了新途径。
• Iodine-catalyzed and solvent-controlled selective electrophilic cyclization and oxidative esterification of ortho-alkynyl aldehydes
  作者：Akhilesh Kumar Verma、Trapti Aggarwal、Vineeta Rustagi、Richard C. Larock

  DOI：10.1039/b927185f

  日期：——

  4-Iodo-pyrano[4,3-b]quinolines and ortho-alkynyl esters were synthesized selectively from ortho-alkynyl aldehydes by an iodine-catalyzed and solvent controlled reaction.

  4-碘吡喃[4,3-b]喹啉和邻烷炔酯通过碘催化和溶剂控制反应，从邻烷炔醛中选择性合成。
• Triple‐Bond Directed Csp ² −N Bond Formation with <i>N</i> ‐Fluorobenzenesulfonimide as Aminating Source: One‐Step Transformation of Aldehydes into Amines
  作者：Sushmita、Trapti Aggarwal、Norio Shibata、Akhilesh K. Verma

  DOI：10.1002/chem.201903495

  日期：2019.12.13

  amination of ortho‐alkynyl quinoline/pyridine aldehydes using N‐fluorobenzenesulfonimide as nitrogen source under mild reaction conditions has been described. The designed reaction strategy was triggered by trapping of fluorine by base with subsequent attack of bis(phenylsulfonyl)‐λ2‐azane on the carbonyl carbon of a heterocycle, which was gradually converted into the corresponding amine through a Curtius

  本文描述了一种无金属，多功能的三键定向方法，该方法在温和的反应条件下，使用N-氟苯磺酰亚胺作为氮源，对邻炔基喹啉/吡啶醛进行脱羰CH-氨基化。所设计的反应策略通过用碱与双（苯基磺酰基）随后攻击-λ捕集氟的触发2 -azane上的杂环，其逐渐通过库尔提斯重排型转化成相应的胺的羰基碳。该方案提供了一步一步的方法，可将醛以高收率转化为胺。合成的胺已成功转化为生物学上重要的吡咯并喹啉/吡啶。