2-(o-tolyl)-2,3-dihydrofuran | 1472613-26-5

• 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: 2-(o-tolyl)-2,3-dihydrofuran
• 英文别名: 2,3-Dihydro-2-(methylphenyl)furan；2-(2-methylphenyl)-2,3-dihydrofuran
• CAS: 1472613-26-5
• 化学式: C₁₁H₁₂O
• 分子量: 160.216
• InChiKey: SQXFITIFOQUACS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  苯基三氟甲烷磺酸酯 、 2-(o-tolyl)-2,3-dihydrofuran 在 lithium acetate 、 (S)-BINAP monoxide 、 bis(dibenzylideneacetone)-palladium⁽⁰⁾ 作用下， 以 四氢呋喃 为溶剂， 以60%的产率得到
  参考文献：
  名称：

  Kinetic resolution of 2-substituted-2,3-dihydrofurans by a palladium-catalyzed asymmetric Heck reaction

  摘要：

  通过Pd催化的不对称Heck反应，首次实现了对2-取代二氢呋喃的动力学分辨。

  DOI：

  10.1039/c5ra17374d
• 作为产物：
  描述：

  2,3-二氢呋喃 、 2-溴甲苯 在 二叔丁基新戊基膦 、 N,N-二异丙基乙胺 、 bis(dibenzylideneacetone)-palladium⁽⁰⁾ 作用下， 以 乙腈 为溶剂， 反应 5.0h， 以35%的产率得到2-(o-tolyl)-2,3-dihydrofuran
  参考文献：
  名称：

  Controlling Olefin Isomerization in the Heck Reaction with Neopentyl Phosphine Ligands

  摘要：

  The use of neopentyl phosphine ligands was examined in the coupling of aryl bromides with alkenes. Di-tert-butylneopentylphosphine (DTBNpP) was found to promote Heck couplings with aryl bromides at ambient temperature. In the Heck coupling of cyclic alkenes, the degree of alkene isomerization was found to be controlled by the choice of ligand with DTBNpP promoting isomerization to a much greater extent than trineopentylphosphine (TNpP). Under optimal conditions, DTBNpP provides high selectivity for 2-aryl-2,3-dihydrofuran in the arylation of 2,3-dihydrofuran, whereas TNpP provided high selectivity for the isomeric 2-aryl-2,5-dihydrofuran. A similar complementary product selectivity is seen in the Heck coupling of cyclopentene. Heck coupling of 2-bromophenols or 2-bromoanilides with 2,3-dihydrofurans affords 2,5-epoxybenzoxepin and 2,5-epoxybenzazepins, respectively.

  DOI：

  10.1021/jo501840u

文献信息

• Palladacycle-Catalyzed Regioselective Heck Reaction Using Diaryliodonium Triflates and Aryl Iodides
  作者：Lu Lei、Pei-Sen Zou、Zhi-Xin Wang、Cui Liang、Cheng Hou、Dong-Liang Mo

  DOI：10.1021/acs.orglett.1c04120

  日期：2022.1.21

  P-containing palladacycle-catalyzed regioselective Heck reaction of 2,3-dihydrofuran with diaryliodonium salts and aryl iodides to afford 2-aryl-2,5-dihydrofurans and 2-aryl-2,3-dihydrofurans, respectively, in good yields. Mechanistic studies revealed that the oxidative addition of diaryliodonium salts to palladacycles to form Pd(IV) species showed high chemoselectivity and that electron-rich aryl moieties

  我们描述了含 P 钯环催化的 2,3-二氢呋喃与二芳基碘鎓盐和芳基碘化物的区域选择性 Heck 反应，分别得到 2-aryl-2,5-dihydrofurans 和 2-aryl-2,3-dihydrofurans，在良好的产量。机理研究表明，二芳基碘鎓盐氧化加成到钯环上形成 Pd(IV) 物种显示出高化学选择性，并且富电子芳基部分优先转移到 Heck 产物上。DFT 计算表明，决定区域选择性的步骤是还原消除反应，而不是 Pd(IV)-氢化物中间体的异构化和重新插入双键。
• Asymmetric Intermolecular Heck Reaction of Aryl Halides
  作者：Chunlin Wu、Jianrong Zhou

  DOI：10.1021/ja412277z

  日期：2014.1.15

  The asymmetric intermolecular Heck reaction has been limited to aryl and vinyl triflates. Herein, we extend the reaction to aryl and vinyl bromides. Various cyclic olefins coupled with high enantioselectivity. Only bisphosphine oxides on a spiro backbone formed highly stereoselective Pd catalysts. The use of alcoholic solvents and alkylammonium salts were essential to promote halide dissociation from

  不对称分子间 Heck 反应仅限于芳基和乙烯基三氟甲磺酸酯。在这里，我们将反应扩展到芳基和乙烯基溴化物。具有高对映选择性的各种环烯烃。只有螺骨架上的双膦氧化物形成高度立体选择性的 Pd 催化剂。醇溶剂和烷基铵盐的使用对于促进卤化物从中性芳基钯络合物中解离是必不可少的。
• [EN] SPIRO-1,1'-BIINDANE-7,7-BISPHOSPHINE OXIDES AS HIGHLY ACTIVE SUPPORTING LIGANDS FOR PALLADIUM-CATALYZED ASYMMETRIC HECK REACTION<br/>[FR] OXYDES DE SPIRO-1,1'-BIINDANE-7,7-BISPHOSPHINE COMME LIGANDS DE SUPPORT HAUTEMENT ACTIFS POUR UNE RÉACTION DE HECK ASYMÉTRIQUE CATALYSÉE PAR DU PALLADIUM
  申请人：UNIV NANYANG TECH

  公开号：WO2014196930A1

  公开（公告）日：2014-12-11

  The present invention relates to catalyst complexes comprising palladium (Pd) and at least one spiro-1,1 '-biindane-7,7'- bisphosphine oxide ligand as disclosed herein, and their use. The present invention is further directed to the asymmetric Pd-catalyzed covalent carbon-carbon single bond formation from aryl, heteroaryl and alkenyl triflates and halides and olefins utilising the said catalyst complexes.

  本发明涉及包含钯（Pd）和至少一种如本文所述的螺-1,1'-联萘-7,7'-双膦氧配体的催化剂复合物，以及它们的使用。本发明进一步涉及利用所述催化剂复合物从芳基、杂环芳基和烯基三氟甲烷磺酸酯和卤代物以及烯烃中进行不对称Pd催化的共价碳-碳单键形成。
• Controlling Olefin Isomerization in the Heck Reaction with Neopentyl Phosphine Ligands
  作者：Matthew G. Lauer、Mallory K. Thompson、Kevin H. Shaughnessy

  DOI：10.1021/jo501840u

  日期：2014.11.21

  The use of neopentyl phosphine ligands was examined in the coupling of aryl bromides with alkenes. Di-tert-butylneopentylphosphine (DTBNpP) was found to promote Heck couplings with aryl bromides at ambient temperature. In the Heck coupling of cyclic alkenes, the degree of alkene isomerization was found to be controlled by the choice of ligand with DTBNpP promoting isomerization to a much greater extent than trineopentylphosphine (TNpP). Under optimal conditions, DTBNpP provides high selectivity for 2-aryl-2,3-dihydrofuran in the arylation of 2,3-dihydrofuran, whereas TNpP provided high selectivity for the isomeric 2-aryl-2,5-dihydrofuran. A similar complementary product selectivity is seen in the Heck coupling of cyclopentene. Heck coupling of 2-bromophenols or 2-bromoanilides with 2,3-dihydrofurans affords 2,5-epoxybenzoxepin and 2,5-epoxybenzazepins, respectively.
• Kinetic resolution of 2-substituted-2,3-dihydrofurans by a palladium-catalyzed asymmetric Heck reaction
  作者：Hao Li、Shi-Li Wan、Chang-Hua Ding、Bin Xu、Xue-Long Hou

  DOI：10.1039/c5ra17374d

  日期：——

  The kinetic resolution of 2-substituted-dihydrofurans via a Pd-catalyzed asymmetric Heck reaction was realized for the first time.

  通过Pd催化的不对称Heck反应，首次实现了对2-取代二氢呋喃的动力学分辨。