1-(bromoethynyl)-2-methoxybenzene | 199165-20-3

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: 1-(bromoethynyl)-2-methoxybenzene
• 英文别名: 2-(bromoethynyl)anisole；1-(2-bromoethynyl)-2-methoxybenzene
• CAS: 199165-20-3
• 化学式: C₉H₇BrO
• 分子量: 211.058
• InChiKey: XAOUGLZREVDTGS-UHFFFAOYSA-N

物化性质

• 沸点：
  273.3±42.0 °C(Predicted)
• 密度：
  1.48±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  11
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.11
• 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：

  1-(bromoethynyl)-2-methoxybenzene 在 盐酸羟胺 、 正丁胺 、 copper(l) chloride 作用下， 以 四氢呋喃 、 二氯甲烷 、 氯仿 、 水 为溶剂， 反应 5.0h， 生成 1-(2-methoxyphenethyl)dibenzofuran
  参考文献：
  名称：

  A Traceless Tether Strategy for Achieving Formal Intermolecular Hexadehydro-Diels–Alder Reactions

  摘要：

  A synthetic strategy formally equivalent to an intermolecular hexadehydro-Diels-Alder (HDDA) reaction is described. Sulfur-based linkers were designed and constructed by joining terminal alkynes or diynes using alkyne thiolate chemistry. The resulting tetraynes and triynes successfully underwent HDDA cyclization and benzyne trapping. Linker removal by reductive desulfurization was uneventful. The strategy was also found suitable for the tetradehydro-Diels Alder (TDDA) reaction.

  DOI：

  10.1021/acs.orglett.8b02473
• 作为产物：
  描述：

  2-碘苯甲醚 在 甲醇 、 bis-triphenylphosphine-palladium(II) chloride 、 N-溴代丁二酰亚胺(NBS) 、 copper(l) iodide 、 potassium fluoride dihydrate 、 silver nitrate 、 二异丙胺 、 三苯基膦 作用下， 以 四氢呋喃 、 丙酮 、 甲苯 为溶剂， 生成 1-(bromoethynyl)-2-methoxybenzene
  参考文献：
  名称：

  A Traceless Tether Strategy for Achieving Formal Intermolecular Hexadehydro-Diels–Alder Reactions

  摘要：

  A synthetic strategy formally equivalent to an intermolecular hexadehydro-Diels-Alder (HDDA) reaction is described. Sulfur-based linkers were designed and constructed by joining terminal alkynes or diynes using alkyne thiolate chemistry. The resulting tetraynes and triynes successfully underwent HDDA cyclization and benzyne trapping. Linker removal by reductive desulfurization was uneventful. The strategy was also found suitable for the tetradehydro-Diels Alder (TDDA) reaction.

  DOI：

  10.1021/acs.orglett.8b02473

文献信息

• Copper-Catalyzed <i>N</i>-Alkynylations of Sulfoximines with Bromoacetylenes
  作者：Xiao Yun Chen、Long Wang、Marcus Frings、Carsten Bolm

  DOI：10.1021/ol5016898

  日期：2014.7.18

  N-Alkynylated sulfoximines have been obtained by copper-catalyzed cross-coupling reactions starting from NH-sulfoximines and bromoacetylenes in moderate to good yields. The reaction conditions are mild, and the substrate scope is wide.

  Ñ -Alkynylated亚磺酰亚胺已通过从开始铜催化的交叉偶联反应得到Ñ H-亚磺酰亚胺和bromoacetylenes在中度至良好的产率。反应条件温和，底物范围广。
• Direct Metal-Free Entry to Aminocyclobutenes or Aminocyclobutenols from Ynamides: Synthetic Applications
  作者：Benito Alcaide、Pedro Almendros、Carlos Lázaro-Milla

  DOI：10.1002/chem.201601044

  日期：2016.6.20

  The [2+2] cycloaddition of ynamides with the highly polarized reagent Tf2C=CH2 has been developed to regioselectively afford bis(triflyl)aminocyclobutenes in the absence of catalyst under mild conditions. Incidentally, with the ynamides bearing electron‐rich aromatic rings at the C‐terminal, an interesting reactivity switch was observed; a cyclization/hydroxylation sequence yielded 2‐amino‐3‐(trif

  酰胺与高极化试剂Tf 2 C = CH 2的[2 + 2]环加成已开发出在温和条件下在不存在催化剂的情况下区域选择性地提供双（三氟乙）氨基环丁烯的方法。顺便说一下，对于在C端带有富电子芳族环的炔基，观察到一个有趣的反应性开关。一个环化/羟基化序列产生2-氨基-3-（triflyl）环丁-2-烯醇。加有醇的氨基环丁烯结构导致通过环化/加氢烷氧基化过程形成氨基环丁烯基醚。此外，通过4个π电子环的制备α-氨基-β，γ-不饱和酮和3-（三氟乙烯）丁a-1,3-二烯-2-胺，证明了官能化的氨基环丁烯作为进一步精细加工的前体的效用。开环。
• Gold-Catalyzed <i>syn</i>-1,2-Difunctionalization of Ynamides via Nitrile Activation
  作者：Rajeshwer Vanjari、Shubham Dutta、Manash P. Gogoi、Vincent Gandon、Akhila K. Sahoo

  DOI：10.1021/acs.orglett.8b03830

  日期：2018.12.21

  Developed is an unprecedented Au(I)-catalyzed syn-1,2-difunctionalization of ynamides with 2-aminobenzonitriles via nitrile activation. The coupling between ynamides and 2-aminobenzonitriles is explicitly regioselective, providing a straightforward access to 2,4-diamino-substituted quinolines. Density functional theory (DFT) study provides insightful information and rationalizes the reaction pathway

  通过腈活化，开发了前所未有的Au（I）催化的2-（2-氨基苄腈）酰胺类的Au（I）催化syn -1,2-双官能化。乙酰胺和2-氨基苄腈之间的偶联具有明确的区域选择性，可直接获得2,4-二氨基取代的喹啉。密度泛函理论（DFT）研究提供了有见地的信息并合理化了反应途径。它显示了Au（I）催化剂在酰胺π活化和腈σ配位之间的协同作用如何使环化可行。
• A Micellar Catalysis Strategy for Amidation of Alkynyl Bromides: Synthesis of Ynamides in Water
  作者：Yunqin Yang、Xiangtai Meng、Baolong Zhu、Ying Jia、Xiaoji Cao、Shenlin Huang

  DOI：10.1002/ejoc.201801601

  日期：2019.2.7

  The synthesis of ynamides in water was achieved by a micellar catalysis strategy using rosin‐based surfactant APGS‐550‐M, which can be easily prepared from natural abundant biomass.

  使用松香基表面活性剂APGS-550-M通过胶束催化策略可以实现水中乙酰胺的合成，该表面活性剂可以轻松地由天然丰富的生物质制备。
• Palladium-Catalyzed Sequential Nucleophilic Addition/Oxidative Annulation of Bromoalkynes with Benzoic Acids To Construct Functionalized Isocoumarins
  作者：Guangbin Jiang、JianXiao Li、Chuanle Zhu、Wanqing Wu、Huanfeng Jiang

  DOI：10.1021/acs.orglett.7b01919

  日期：2017.9.1

  for the preparation of 3-substituted isocoumarins via palladium-catalyzed nucleophilic addition/oxidative annulation of bromoalkynes with benzoic acids has been developed. Remarkably, preliminary mechanistic studies indicated that the transformation might proceed via a stereo- and regioselective nucleophilic addition and C–H functionalization procedure.

  已经开发了通过钯催化的溴炔烃与苯甲酸的亲核加成/氧化环化反应制备3-取代的香豆素的有效而有效的方案。值得注意的是，初步的机理研究表明，转化可能通过立体和区域选择性亲核加成和CH功能化程序进行。