4-methyl-N-(2-methyl-2-phenylpent-4-ynyl)benzenesulfonamide

• 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: 4-methyl-N-(2-methyl-2-phenylpent-4-ynyl)benzenesulfonamide
• 化学式: C₁₉H₂₁NO₂S
• 分子量: 327.447
• InChiKey: IGXPXBSRZABHAS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  23
• 可旋转键数：
  6
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.26
• 拓扑面积：
  54.6
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  4-methyl-N-(2-methyl-2-phenylpent-4-ynyl)benzenesulfonamide 在 三羰基(四苯基环戊二烯酮)铁 作用下， 以 氘代甲苯 、 1,2-二氯乙烷 为溶剂， 反应 8.0h， 以93%的产率得到
  参考文献：
  名称：

  Discovery of a Photoinduced Dark Catalytic Cycle Using in Situ LED-NMR Spectroscopy

  摘要：

  We report the use of LED-NMR spectroscopy to study the reaction mechanism of a newly discovered photoinduced iron-catalyzed cycloisomerization of alkynols to cyclic enol ethers. By understanding on/off ligand binding to the catalyst, we were able to appropriately design reaction conditions to balance catalyst activity and stability. LED-NMR was demonstrated to be a powerful tool in elucidating reaction mechanisms of photochemical reactions. Temporal NMR spectroscopic data under visible light illumination (1) revealed the pre-catalyst activation mechanism, (2) proved that photon flux provides a unique external control of the equilibrium distribution between the pre-catalyst and active catalyst, and ultimately the rate of reaction, (3) provided information about the reaction driving forces and the turnover-limiting step, and (4) enabled both real-time structural and kinetic insights into elusive species (e.g., dissolved gases).

  DOI：

  10.1021/jacs.8b08596
• 作为产物：
  描述：

  α-甲基苯腈 在 lithium aluminium tetrahydride 、 sodium hydride 、 三乙胺 作用下， 以 四氢呋喃 、 乙醚 、 二氯甲烷 为溶剂， 反应 35.25h， 生成 4-methyl-N-(2-methyl-2-phenylpent-4-ynyl)benzenesulfonamide
  参考文献：
  名称：

  （二乙酰氧基碘）苯介导的3-炔基胺级联反应的无金属合成多取代吡咯

  摘要：

  游离金属夹套：通过（二乙酰氧基碘）苯介导的炔胺级联反应，以中等至良好的收率开发了多区域取代的吡咯的无区域选择性金属合成方法（参见方案）。

  DOI：

  10.1002/asia.201100474

文献信息

• Metal-Free Synthesis of Polysubstituted Pyrroles by (Diacetoxyiodo)Benzene-Mediated Cascade Reaction of 3-Alkynyl Amines
  作者：Dong-Liang Mo、Chang-Hua Ding、Li-Xin Dai、Xue-Long Hou

  DOI：10.1002/asia.201100474

  日期：2011.12.2

  Free metal jacket: A regioselective metal‐free synthesis of polysubstituted pyrroles has been developed through a (diacetoxyiodo)benzene‐mediated cascade reaction of alkynyl amines in moderate to good yield (see scheme).

  游离金属夹套：通过（二乙酰氧基碘）苯介导的炔胺级联反应，以中等至良好的收率开发了多区域取代的吡咯的无区域选择性金属合成方法（参见方案）。
• Discovery of a Photoinduced Dark Catalytic Cycle Using <i>in Situ</i> LED-NMR Spectroscopy
  作者：Dan Lehnherr、Yining Ji、Andrew J. Neel、Ryan D. Cohen、Andrew P. J. Brunskill、Junyu Yang、Mikhail Reibarkh

  DOI：10.1021/jacs.8b08596

  日期：2018.10.24

  We report the use of LED-NMR spectroscopy to study the reaction mechanism of a newly discovered photoinduced iron-catalyzed cycloisomerization of alkynols to cyclic enol ethers. By understanding on/off ligand binding to the catalyst, we were able to appropriately design reaction conditions to balance catalyst activity and stability. LED-NMR was demonstrated to be a powerful tool in elucidating reaction mechanisms of photochemical reactions. Temporal NMR spectroscopic data under visible light illumination (1) revealed the pre-catalyst activation mechanism, (2) proved that photon flux provides a unique external control of the equilibrium distribution between the pre-catalyst and active catalyst, and ultimately the rate of reaction, (3) provided information about the reaction driving forces and the turnover-limiting step, and (4) enabled both real-time structural and kinetic insights into elusive species (e.g., dissolved gases).