2,6-dimethyl-6H-dibenzo[c,e][1,2]thiazine-5,5-dioxide | 136859-36-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并噻嗪类
• 英文名称: 2,6-dimethyl-6H-dibenzo[c,e][1,2]thiazine-5,5-dioxide
• 英文别名: 2,6-Dimethylbenzo[c][2,1]benzothiazine 5,5-dioxide
• CAS: 136859-36-4
• 化学式: C₁₄H₁₃NO₂S
• 分子量: 259.329
• InChiKey: QLTUWDLWVNDMGA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  18
• 可旋转键数：
  0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  45.8
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  N-(2-bromophenyl)-4-methylbenzenesulfonamide 在 偶氮二异丁腈 、 1,1,2,2-tetraphenyldisilane 作用下， 以 间二甲苯 为溶剂， 反应 22.0h， 生成 2,6-dimethyl-6H-dibenzo[c,e][1,2]thiazine-5,5-dioxide
  参考文献：
  名称：

  Synthetic use of 1,1,2,2-tetraphenyldisilane for the preparation of biaryls through the intramolecular free radical ipso-substitution of N-(2-bromoaryl)arenesulfonamides

  摘要：

  Treatment of various N-methyl-N-(2-bromoaryl)arenesulfonamides (1a-g, 1i, and 1m) with 1,1,2,2-tetraphenyldisilane and AIBN under heating conditions gave the corresponding biaryl products (2a-g, 2i, and 2m) in moderate yields through the intramolecular radical ipso-substitution. However, N-H foe N-(2-brornoaryl)arenesulfonamides Ih and 2-bromoaryl arenesulfonate 1j did not give the corresponding biarys. 1,1,2,2-Tetraphenyldisilane is the most effective reagent for 1,5-ipso-substitution on the sulfonamides among typical radical reagents such as diphenylsilane, tributyltin hydride, tris(trimethylsilyl)silane, and 1,1,2,2-tetraphenyldisilane. Furthermore, 1,1,2,2 tetraphenyldisilane has the advantages of low toxicity, stability, and ease of preparation. (C) 2001 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4020(01)00560-9

文献信息

• Photoredox Transformations with Dimeric Gold Complexes
  作者：Guillaume Revol、Terry McCallum、Mathieu Morin、Fabien Gagosz、Louis Barriault

  DOI：10.1002/anie.201306727

  日期：2013.12.9

  Let the sunshine in! Unactivated alkyl and aryl bromides underwent a light‐enabled reductive radical cyclization in the presence of a dimeric phosphine–gold complex as a photocatalyst (see scheme; X=C(CO2Et)2, NR, O). Sunlight can be used as the energy source for this simple and efficient radical reaction, which does not require potentially hazardous and toxic chemical reagents, such as organostannanes

  让阳光照进来！未活化的烷基和芳基溴化物在二聚膦-金络合物作为光催化剂的情况下进行了光活化的还原性自由基环化反应（见方案； X = C（CO 2 Et）2，NR，O）。阳光可以用作此简单有效的自由基反应的能源，该自由基反应不需要潜在危险和有毒的化学试剂，例如有机锡和化学引发剂。
• Synthesis of biaryls via intramolecular free radical ipso-substitution reactions
  作者：Feroze Ujjainwalla、Maria Lucília E.N. da Mata、Andrew M.K. Pennell、Carmen Escolano、William B. Motherwell、Santiago Vázquez

  DOI：10.1016/j.tet.2015.07.048

  日期：2015.9

  intramolecular free radical [1,5]-ipso-substitution using sulfonamide and sulfonate derived tethering chains. The overall efficiency of the process is determined by appropriately positioned substituents on the aromatic acceptor ring. The extension of the process to benzylic sulfonates and their corresponding N-methylsulfonamide alternatives as substrates in potential [1,6]-ipso-substitution reactions leads

  使用磺酰胺和磺酸酯衍生的束缚链，通过分子内自由基[1,5] -ipso取代制备各种官能化的联芳基和杂联芳基。该方法的总效率由芳族受体环上适当定位的取代基决定。该方法的扩展来苄基磺酸酯和它们的相应Ñ -methylsulfonamide替代作为底物在潜在[1,6] -本位3'-取代反应引线主要以替代[1,7]加成产物。
• A novel route to biaryls via intramolecular free radical ipso substitution reactions
  作者：William B. Motherwell、Andrew M. K. Pennell

  DOI：10.1039/c39910000877

  日期：——

  A variety of usefully functionalised biaryls may be prepared under neutral conditions by an intramolecular free radical ipso substitution reaction at an sp2 sulphonyl substituted carbon atom; the overall efficiency of the process being determined both by the nature and number of atoms linking the two aromatic rings and by appropriately positioned substituents on the aromatic aceeptor ring.

  可以在中性条件下通过sp 2磺酰基取代的碳原子上的分子内自由基ipso取代反应制备各种有用的官能化联芳基；该方法的总效率取决于连接两个芳环的原子的性质和数量以及芳族乙酰对映体环上适当放置的取代基。
• Aryl radical-induced desulfonylative<i>ipso</i>-substitution of diaryliodonium salts: an efficient route to sterically hindered biarylamines
  作者：Huangguan Chen、Limin Wang、Jianwei Han

  DOI：10.1039/d0cc01766c

  日期：——

  By using vicinal aryl sulfonamide substituted diaryliodonium salts, a cascade of desulfonylation/aryl migration was promoted by triethylamine in the synthesis of sterically hindered biarylamines, which operated via a radical-induced reaction pathway. The products were readily converted into a variety of important synthons. Furthermore, coupling reactions of N-methyl biarylamine and 1,6-dibromopyrene

  通过使用邻位芳基磺酰胺取代的二芳基碘鎓盐，三乙胺在空间受阻联芳基胺的合成中促进了级联的磺酰化/芳基迁移，该合成通过自由基诱导的反应途径进行。产物易于转化为多种重要的合成子。此外，N-甲基联芳基胺和1,6-二溴py的偶联反应在OLED中提供了潜在的吸引力分子。
• Steric and electronic effects in the synthesis of biaryls and their heterocyclic congeners using intramolecular free radical [1,5] ipso substitution reactions
  作者：Maria Lucília E.N da Mata、William B Motherwell、Feroze Ujjainwalla

  DOI：10.1016/s0040-4039(96)02236-8

  日期：1997.1

  intramolecular free radical [1,5] ipso substition using sulfonamide and sulfonate tethering chains, since the introduction of either electron releasing or electron withdrawing groups ortho to the sulfonyl substituted acceptor ring facilitates the overall reaction.

  受阻的联芳基和杂联芳基甚至更容易通过使用磺酰胺和磺酸酯束缚链的分子内自由基[1,5] ipso取代来制备，因为在磺酰基取代的受体环上引入了电子释放基团或吸电子基团可以促进整个反应。