2-(thiophen-2-yl)-2H-chromene | 1413850-37-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: 2-(thiophen-2-yl)-2H-chromene
• 英文别名: 2-thiophen-2-yl-2H-chromene
• CAS: 1413850-37-9
• 化学式: C₁₃H₁₀OS
• 分子量: 214.288
• InChiKey: VLZDMAMUPLVGCT-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  15
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.08
• 拓扑面积：
  37.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2-(thiophen-2-yl)-2H-chromene 在 chloroauric acid 、 水 作用下， 以 二氯甲烷 为溶剂， 反应 24.0h， 以56%的产率得到3-(2-hydroxyphenyl)-1-(thiophen-2-yl)propan-1-one
  参考文献：
  名称：

  An unexpected rearrangement-hydration reaction sequence of 2H-chromenes to dihydrochalcones under catalysis of HAuCl4

  摘要：

  2-Aryl-2H-chromenes in aqueous DCM medium under catalysis of HAuCl4 are converted into 3-(2-hydroxyaryl)-1-arylpropan-1-ones through hydration-rearrangement reaction sequence in very good yield. The key step probably involves the [1,5] hydride shift followed by the hydrolysis under the reaction condition. The notable advantages of this method are operational simplicity and ease of isolation of products and also provide a pathway to convert the chalcone into DHCs with the transposition of carbonyl group. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2012.08.117
• 作为产物：
  描述：

  3-(2-thienyl)-1-(2-hydroxyphenyl)-2-propen-1-one 在 sodium tetrahydroborate 作用下， 以 异丙醇 为溶剂， 生成 2-(thiophen-2-yl)-2H-chromene
  参考文献：
  名称：

  叔丁基氢过氧化物和溴化铜将2-芳基-2 H-色烯有效氧化转化为相应的黄酮

  摘要：

  已经开发了一种简单有效的方法，用于在80℃下于很短时间内在甲苯中存在溴化铜（II）的情况下，通过叔丁基氢过氧化物（TBHP）轻松地将二甲基苯酮氧化为相应的黄酮。该反应显示出优异的反应性，官能团耐受性以及良好至优异的产率，而无需使用常规的强氧化剂。

  DOI：

  10.1016/j.tetlet.2016.03.006

文献信息

• Palladium-catalyzed coupling of N-tosylhydrazones and β-bromostyrene derivatives: new approach to 2H-chromenes
  作者：Yamu Xia、Ying Xia、Yan Zhang、Jianbo Wang

  DOI：10.1039/c4ob01979b

  日期：——

  structural motif that exists in natural products and non-natural compounds possessing interesting biological activities. In this investigation, a highly efficient approach toward 2H-chromenes has been developed based on palladium-catalyzed coupling of N-tosylhydrazones and β-bromostyrenes. The mechanism of this reaction is proposed that involves the formation of vinyl palladium by carbene migratory insertion

  2 H -Chromene是存在于天然产物和具有有趣生物活性的非天然化合物中的重要结构基序。在这项研究中，基于钯催化的N-甲苯磺酰hydr和β-溴苯乙烯的偶联，已经开发出一种高效的2 H-苯甲基苯胺的方法。提出了该反应的机理，该机理涉及通过卡宾迁移插入和分子内亲核取代形成乙烯基钯。
• Transition-Metal-Free Cross-Coupling of Indium Organometallics with Chromene and Isochroman Acetals Mediated by BF₃·OEt₂
  作者：José M. Gil-Negrete、José Pérez Sestelo、Luis A. Sarandeses

  DOI：10.1021/acs.orglett.6b02058

  日期：2016.9.2

  coupling of triorganoindium reagents with benzopyranyl acetals mediated by a Lewis acid has been developed. The reaction of R3In with chromene and isochroman acetals in the presence of BF3·OEt2 afforded 2-substituted chromenes and 1-substituted isochromans, respectively, in good yields. The reactions proceed with a variety of triorganoindium reagents (aryl, heteroaryl, alkynyl, alkenyl, alkyl) using

  已经开发了由路易斯酸介导的三有机铟试剂与苯并吡喃基乙缩醛的无过渡金属偶联。在BF 3 ·OEt 2的存在下，R 3 In与亚甲基苯并异铬烷醛的缩醛反应，分别以高收率得到2-取代的苯并二烯和1-取代的异苯并二氢吡喃。反应仅使用50 mol％的有机金属，通过各种三有机铟试剂（芳基，杂芳基，炔基，烯基，烷基）进行，因此证明了这些物质的效率。初步的机理研究表明在路易斯酸存在下氧碳carb离子中间体的形成。
• An unexpected rearrangement-hydration reaction sequence of 2H-chromenes to dihydrochalcones under catalysis of HAuCl4
  作者：Gourhari Maiti、Utpal Kayal、Rajiv Karmakar、Rudraksha N. Bhattacharya

  DOI：10.1016/j.tetlet.2012.08.117

  日期：2012.11

  2-Aryl-2H-chromenes in aqueous DCM medium under catalysis of HAuCl4 are converted into 3-(2-hydroxyaryl)-1-arylpropan-1-ones through hydration-rearrangement reaction sequence in very good yield. The key step probably involves the [1,5] hydride shift followed by the hydrolysis under the reaction condition. The notable advantages of this method are operational simplicity and ease of isolation of products and also provide a pathway to convert the chalcone into DHCs with the transposition of carbonyl group. (C) 2012 Elsevier Ltd. All rights reserved.
• An efficient oxidative conversion of 2-aryl-2H-chromenes to the corresponding flavones by tert-butylhydroperoxide and copper bromide
  作者：Dipanwita Banerjee、Utpal Kayal、Gourhari Maiti

  DOI：10.1016/j.tetlet.2016.03.006

  日期：2016.4

  A simple and efficient method has been developed for the facile oxidation of chromenes to the corresponding flavones by tert-butylhydroperoxide (TBHP) in the presence of copper(II) bromide catalyst in toluene at 80 °C in a very short time. The reaction demonstrates excellent reactivity, functional group tolerance, and good to excellent yields without using conventional strong oxidizing agents.

  已经开发了一种简单有效的方法，用于在80℃下于很短时间内在甲苯中存在溴化铜（II）的情况下，通过叔丁基氢过氧化物（TBHP）轻松地将二甲基苯酮氧化为相应的黄酮。该反应显示出优异的反应性，官能团耐受性以及良好至优异的产率，而无需使用常规的强氧化剂。