2,6-dimethylphenyl trifluoromethanesulfonate | 86364-02-5

• 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: 2,6-dimethylphenyl trifluoromethanesulfonate
• 英文别名: 2,6-dimethylphenyl triflate；Methanesulfonic acid, trifluoro-, 2,6-dimethylphenyl ester；(2,6-dimethylphenyl) trifluoromethanesulfonate
• CAS: 86364-02-5
• 化学式: C₉H₉F₃O₃S
• 分子量: 254.23
• InChiKey: ALJAHPWNRXXSSU-UHFFFAOYSA-N

物化性质

• 沸点：
  275.0±40.0 °C(Predicted)
• 密度：
  1.386±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  16
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  51.8
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  2,6-dimethylphenyl trifluoromethanesulfonate 在 bis-triphenylphosphine-palladium(II) chloride 、 palladium on activated charcoal copper(l) iodide 、 氢气 、 四丁基碘化铵 、 sodium hydride 、 二乙胺 作用下， 以 四氢呋喃 、 正己烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 18.0h， 生成 (3Z)-2-methoxy-2-methyl-4-(2,6-dimethylphenyl)-3-butene
  参考文献：
  名称：

  Highly Activated Vinyl Hydrogen in a Significantly Twisted Styrene

  摘要：

  The novel example of a vinylic hydrogen more reactive than a benzylic hydrogen was found by treatment of a twisted styrene derivative with a strong base followed by D2O quenching. In this paper, the full details of the examples of the highly activated vinyl hydrogens in twisted styrene derivatives are described, with a discussion on the correlation between the reactivity of the vinyl hydrogens and the magnitude of the twist. The highly reactive vinyl hydrogens could be rationalized by considering the novel orbital interaction between the pi* orbital of the benzene ring and the sigma orbital of the vinylic C-H bond in the twisted styrene derivatives.

  DOI：

  10.1021/jo061092z
• 作为产物：
  描述：

  2,6-二甲基苯硼酸 、 三氟甲磺酸钠 在 5,5-dioxido-2,8-bis(trifluoromethyl)-10H-dibenzo[b,e][1,4]thiabismin-10-yl trifluoromethanesulfonate 、 sodium phosphate 、 2,6-dichloro-1-fluoropyridin-1-ium tetrafluoroborate 作用下， 以 氯仿 为溶剂， 反应 16.0h， 以70%的产率得到2,6-dimethylphenyl trifluoromethanesulfonate
  参考文献：
  名称：

  芳基硼酸与三氟甲磺酸盐和九氟甲磺酸盐的铋催化氧化偶联

  摘要：

  在此，我们提出了基于 Bi(III)/Bi(V) 氧化还原循环的芳基硼酸与全氟烷基磺酸盐的 Bi 催化交叉偶联。缺电子的砜配体被证明是成功实施该协议的关键，它允许使用市售的 NaOTf 和 KONf 作为偶联伙伴构建 C(sp2)-O 键。初步的机理研究和理论研究揭示了高度亲电子的 Bi(V) 物种的中间体，它可以快速消除三氟甲磺酸苯酯。

  DOI：

  10.1021/jacs.0c05343

文献信息

• Palladium‐Catalyzed Reductive Carbonylation of (Hetero) Aryl Halides and Triflates Using Cobalt Carbonyl as CO Source
  作者：Bhushanarao Dogga、C. S. Ananda Kumar、Jayan T. Joseph

  DOI：10.1002/ejoc.202001328

  日期：2021.1.15

  A generalized protocol for the reductive carbonylation of (hetero) aryl halides and triflates under CO gas‐free conditions using Pd/Co2(CO)8 and triethylsilane has been developed. The mild reaction conditions, enhanced safety, and wide substrate scope highlight its importance in routine organic synthesis.

  已经开发了一种通用协议，用于在无CO气体条件下使用Pd / Co 2（CO）8和三乙基硅烷对（杂）芳基卤化物和三氟甲磺酸进行还原羰基化。温和的反应条件，增强的安全性和广泛的底物范围突出了其在常规有机合成中的重要性。
• Room Temperature Carbonylation of (Hetero) Aryl Pentafluorobenzenesulfonates and Triflates using Palladium-Cobalt Bimetallic Catalyst: Dual Role of Cobalt Carbonyl
  作者：Jayan T. Joseph、Ayyiliath M. Sajith、Revanna C. Ningegowda、Sheena Shashikanth

  DOI：10.1002/adsc.201600736

  日期：2017.2.2

  method for the carbonylation of (hetero) aryl pentafluorobenzenesulfonates and triflates under exceptionally mild conditions using palladium/dicobalt octacarbonyl [Pd/Co2(CO)8] has been developed. Besides acting as carbon monoxide (CO) source, Co2(CO)8 enhances the reaction rate by accelerating the CO insertion through an in situ generated bimetallic palladium cobalt tetracarbonyl [Pd‐Co(CO)4] complex

  已经开发了一种在异常温和的条件下使用钯/二钴八羰基[Pd / Co 2（CO）8 ]对（杂）芳基五氟苯磺酸盐和三氟甲磺酸酯进行羰基化的有效方法。除了充当一氧化碳（CO）源外，Co 2（CO）8还可以通过原位生成的双金属钯四羰基钴[Pd-Co（CO）4）加速CO的插入，从而提高反应速率。] 复杂的。在优化的反应条件下，各种活化和失活的，以及位阻和杂芳族底物的羰基化反应在室温下均能有效进行。生物学上相关的异古瓦汀和拉扎贝米中间体的高化学选择性和改进的合成方法突出了其作为有价值的合成方法的范围。该协议的通用性进一步扩展到其他亲电试剂（溴化物，氯化物和甲苯磺酸盐）。
• Process for the preparation of secondary amines
  申请人：Celgro

  公开号：US06107521A1

  公开（公告）日：2000-08-22

  N,N-disubstituted amines in which the amino nitrogen atom is bound to the carbon atom of an aromatic ring disubstituted in the positions ortho to the carbon atom, are prepared by allowing a primary amine and a compound in which an ortho, ortho-disubstituted aromatic compound carrying a nucleofuge substituent, to react in a basic environment in the presence of a catalytic palladium(0) complex and a ligand, the ratio of palladium complex to ligand being greater than at least 1:1. A typical embodiment involves the reaction of 2-methyl-6-ethylphenyl-trifluoromethylsulfonate and (S)-1-methoxy-2-aminopropane in the presence of bis(dibenzylideneacetone)palladium, tri-tert.-butylphosphine, and sodium tert.-butoxide to yield (S)-N-(1-methoxyprop-2-yl)-2-methyl-6-ethylphenylamine.

  N,N-二取代胺，其中氨基氮原子与带有对位碳原子二取代的芳香环碳原子相连，通过在碱性环境中，让一级胺和带有可离去基团的邻、对位二取代的芳香化合物在钯(0)配合物催化剂和配体的存在下反应，钯配合物与配体的比例至少大于1:1来制备。一个典型的实施例涉及2-甲基-6-乙基苯基三氟甲磺酸盐和(S)-1-甲氧基-2-氨基丙烷在二(二苄基丙酮)钯、三叔丁基膦和叔丁醇钠的存在下反应，以产生(S)-N-(1-甲氧基丙-2-基)-2-甲基-6-乙基苯胺。
• Efficient cross-coupling of aryl/alkenyl triflates with acyclic secondary alkylboronic acids
  作者：Tengda Si、Bowen Li、Wenrui Xiong、Bin Xu、Wenjun Tang

  DOI：10.1039/c7ob02531a

  日期：——

  Aryl–secondary alkyl cross-coupling with aryl sulfonate esters as coupling partners remains a significant challenge. Efficient cross-coupling between aryl/alkenyl triflates and acyclic secondary alkylboronic acids is realized for the first time to provide a series of sterically congested acyclic secondary alkyl arenes/olefins in good to excellent yields. The employment of sterically bulky P,PO ligand L1/L2 is

  芳基-仲烷基与芳基磺酸酯作为偶联伙伴的交叉偶联仍然是一个巨大的挑战。首次实现了芳基/烯基三氟甲磺酸酯与无环仲烷基硼酸之间的有效交叉偶联，从而以良好或优异的收率提供了一系列空间上拥挤的无环仲烷基芳烃/烯烃。使用空间庞大的P，P O配体L1 / L2对于高收率和选择性至关重要。该方法实现了男性避孕药和PAF拮抗剂棉酚的关键中间体的简明和4步合成。
• Ni-Catalyzed Cross-Electrophile Coupling of Aryl Triflates with Thiocarbonates via C–O/C–O Bond Cleavage
  作者：Zhaodong Zhu、Yuxin Gong、Weiqi Tong、Weichao Xue、Hegui Gong

  DOI：10.1021/acs.orglett.1c00313

  日期：2021.3.19

  A nickel-catalyzed reductive coupling of aryl triflates with thiocarbonates is reported here. Both electron-rich and -deficient aryl C(sp2)–O electrophiles as well as a class of O-tBu S-alkyl thiocarbonates are compatible with the optimized reaction conditions, as evidenced by 49 examples. The reaction also proceeds with good chemoselective cleavage of the C–O bond with regard to thioesters. This work

  此处报道了芳基三氟甲磺酸酯与硫代碳酸酯的镍催化还原偶联。富电子和不足的芳基C（sp 2）-O亲电体以及一类O - t Bu S-烷基硫代碳酸酯都与优化的反应条件兼容，如49个实例所示。对于硫代酯，该反应还会以良好的C–O键化学选择性裂解来进行。这项工作拓宽了镍催化的还原交叉亲电子偶联反应的范围。