2-(4-methylbenzyl)tetrahydrofuran

• 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-(4-methylbenzyl)tetrahydrofuran
• 英文别名: 2-[(4-Methylphenyl)methyl]oxolane
• 化学式: C₁₂H₁₆O
• mdl: MFCD09031200
• 分子量: 176.258
• InChiKey: NFVJBKXNUILGFU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  13
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  5-(p-tolyl)pent-4-yn-1-ol 在 苄基三甲基氢氧化铵 、 palladium on activated charcoal 、 氢气 作用下， 以 N,N-二甲基甲酰胺 、 乙酸乙酯 为溶剂， 反应 0.03h， 以40%的产率得到2-(4-methylbenzyl)tetrahydrofuran
  参考文献：
  名称：

  Catalytic and metal-free intramolecular hydroalkoxylation of alkynes

  摘要：

  Benzyltrimethylammonium hydroxide act as an efficient metal-free catalyst for the intramolecular hydroalkoxylation of alkynes. Notably, the use of microwave irradiation allowed reaction to operate in only two minutes. Under optimized reaction conditions, linear alkynes bearing aryl and heteroaryl substituents were successfully cyclized with good level of stereoselectivity. (C) 2019 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2019.01.020

文献信息

• Controlling factors determining the regiochemistry of intramolecular alkoxymercuration
  作者：Yasuhisa Senda、Hiroko Kanto、Hiroki Itoh

  DOI：10.1039/a608003k

  日期：——

  The intramolecular alkoxymercuration of (E)-5-arylpent-4-en-1-ols indicated that the regioselectivity is closely related to the Hammett constants of the para-substituents on the benzene ring. Large solvent effects on the regioselectivity were also observed. These results were compared with those of the methoxymercuration of β-methylstyrene analogues. The regioselectivity is discussed in terms of steric effects as well as the electronic effects which are suggested by the MO calculation for the mercurinium ion intermediates.

  分子内烷氧汞化反应(E)-5-芳基-4-戊烯-1-醇表明，反应的区域选择性与苯环上对位取代基的Hammett常数密切相关。同时，我们也观察到溶剂对区域选择性产生了较大的影响。这些结果与β-甲基苯乙烯类似物的甲氧基汞化反应进行了比较。区域选择性不仅讨论了空间效应，还涉及了根据汞鎓离子中间体的分子轨道计算所提出的电子效应。
• Gold(I)/Gold(III) Catalysis that Merges Oxidative Addition and π‐Alkene Activation
  作者：Mathilde Rigoulet、Olivier Thillaye du Boullay、Abderrahmane Amgoune、Didier Bourissou

  DOI：10.1002/anie.202006074

  日期：2020.9.14

  possibility to combine oxidative addition of aryl iodides and π‐activation of alkenes at gold is demonstrated for the first time. The reaction is robust and general (>30 examples including internal alkenes, 5‐, 6‐, and 7‐membered rings). It is regioselective and leads exclusively to trans addition products. The (P,N) gold complex is most efficient with electron‐rich aryl substrates, which are troublesome

  （MeDalphos）AuCl络合物通过Au I / Au III催化可有效实现烯烃与芳基碘的杂芳基化反应。首次证明了在金中结合芳基碘化物的氧化加成和烯烃的π-活化的可能性。该反应牢固且通用（> 30个实例，包括内部烯烃，5元，6元和7元环）。它是区域选择性的，专门导致反式加成产物。（P，N）金络合物在富电子芳基底物方面效率最高，这对于其他光氧化还原/氧化方法来说是麻烦的。此外，它还提供了从5外向内向6内向区域选择性的非常不同的转换 内部烯醇的Z和E异构体之间的环化。
• Regiospecific insertion of benzylidene ligands into the α-C–H bond of ethers
  作者：Helmut Fischer、Johann Schmid、Robert Märkl

  DOI：10.1039/c39850000572

  日期：——

  The benzylidene complexes (CO)5WCH(p-C6H4R)(R = H, Me) react with diethyl or tetrahydrofuran to give regiospecifically the products of the insertion of the benzylidene ligand into the α-C–H bond of the ethers; the insertion reaction follows an associative mechanism initiated by a nucleophilic attack of the ethers at the benzylidene ligand.

  亚苄基配合物（CO）5 W CH（p -C 6 H 4 R）（R = H，Me）与二乙基或四氢呋喃反应，形成区域特异性的亚苄基配体插入α-C–H键的产物醚 插入反应遵循由醚在亚苄基配体上的亲核攻击而引发的缔合机制。
• Ligand-enabled gold-catalyzed 1,2-heteroarylation of alkenes
  作者：Akash G. Tathe、Chetan C. Chintawar、Vivek W. Bhoyare、Nitin T. Patil

  DOI：10.1039/d0cc03707a

  日期：——

  By adopting the interplay between ligand-enabled Au(I)/Au(III) catalysis and the unique π-activation mode of gold complexes, a highly coveted 1,2-heteroarylation of alkenes has been accomplished. The present ligand-enabled approach not only circumvents the requirement for strong sacrificial oxidants or photocatalysts but also operates under mild reaction conditions by utilizing simple and non-prefunctionalized

  通过采用配体使能的Au（I）/ Au（III）催化与金络合物独特的π活化模式之间的相互作用，已实现了令人垂涎的烯烃1,2-杂芳基化。本发明的使配体成为可能的方法不仅克服了对强牺牲氧化剂或光催化剂的需求，而且通过利用简单的和未预官能化的芳基偶联伙伴在温和的反应条件下操作。
• Combining Gold and Photoredox Catalysis: Visible Light-Mediated Oxy- and Aminoarylation of Alkenes
  作者：Basudev Sahoo、Matthew N. Hopkinson、Frank Glorius

  DOI：10.1021/ja400311h

  日期：2013.4.17

  A room-temperature intramolecular oxy- and aminoarylation of alkenes with aryldiazonium salts has been developed using a novel gold and photoredox dual-catalytic system. The compatibility of these two catalytic modes has been established for the first time and demonstrates the potential of this system as a method to expand the scope of nucleophilic addition reactions to carbon-carbon multiple bonds

  已经使用新型金和光氧化还原双催化系统开发了烯烃与芳基重氮盐的室温分子内氧基和氨基芳基化。首次建立了这两种催化模式的兼容性，并证明了该系统作为将亲核加成反应范围扩展到碳-碳多重键的方法的潜力。