2-phenyl-5-((phenylselanyl)methyl)-4,5-dihydrothiazole | 133523-82-7

• 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-phenyl-5-((phenylselanyl)methyl)-4,5-dihydrothiazole
• 英文别名: 2-Phenyl-5-(phenylselanylmethyl)-4,5-dihydro-1,3-thiazole
• CAS: 133523-82-7
• 化学式: C₁₆H₁₅NSSe
• 分子量: 332.328
• InChiKey: BPAACVAWHUXIID-UHFFFAOYSA-N

物化性质

• 沸点：
  456.6±41.0 °C(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.0
• 重原子数：
  19
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.19
• 拓扑面积：
  37.7
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2-phenyl-5-((phenylselanyl)methyl)-4,5-dihydrothiazole 在 三苯基氢化锡 作用下， 反应 1.0h， 以91%的产率得到5-甲基-2-苯基-4,5-二氢-1,3-噻唑
  参考文献：
  名称：

  Organoselenium- and proton-mediated cyclization reactions of allylic amides and thioamides. Syntheses of 2-oxazolines and 2-thiazolines

  摘要：

  A variety of allylic amides and thioamides were treated with phenylselenenyl bromide in chloroform to give, via 5-exo cyclization, 2-oxazolines and 2-thiazolines, respectively, carrying a (phenylselenenyl)methyl substituent in the 5-position. In some cases (N-crotyl- and N-cinnamylamides/thioamides), dihydro-1,3-oxazines/-thiazines were formed via 6-endo cyclization. The phenylselenenyl group of the cyclofunctionalization products was slowly eliminated by treatment with m-chloroperbenzoic acid to introduce unsaturation in the resulting oxazoline/thiazoline. Reductive removal of the phenylselenenyl group was effected by treatment with triphenyltin hydride. This reaction was sometimes accompanied by a rearrangement of the heterocyclic ring. Proton-induced cyclizations of allylic thioamides to give 2-thiazolines was slowly but efficiently effected in boiling toluene containing a catalytic amount of p-toluenesulfonic acid.

  DOI：

  10.1021/jo00010a045
• 作为产物：
  描述：

  N-丙-2-烯基苯甲酰胺 在 劳森试剂 作用下， 以 四氢呋喃 、 氯仿 为溶剂， 反应 3.0h， 生成 2-phenyl-5-((phenylselanyl)methyl)-4,5-dihydrothiazole
  参考文献：
  名称：

  Organoselenium- and proton-mediated cyclization reactions of allylic amides and thioamides. Syntheses of 2-oxazolines and 2-thiazolines

  摘要：

  A variety of allylic amides and thioamides were treated with phenylselenenyl bromide in chloroform to give, via 5-exo cyclization, 2-oxazolines and 2-thiazolines, respectively, carrying a (phenylselenenyl)methyl substituent in the 5-position. In some cases (N-crotyl- and N-cinnamylamides/thioamides), dihydro-1,3-oxazines/-thiazines were formed via 6-endo cyclization. The phenylselenenyl group of the cyclofunctionalization products was slowly eliminated by treatment with m-chloroperbenzoic acid to introduce unsaturation in the resulting oxazoline/thiazoline. Reductive removal of the phenylselenenyl group was effected by treatment with triphenyltin hydride. This reaction was sometimes accompanied by a rearrangement of the heterocyclic ring. Proton-induced cyclizations of allylic thioamides to give 2-thiazolines was slowly but efficiently effected in boiling toluene containing a catalytic amount of p-toluenesulfonic acid.

  DOI：

  10.1021/jo00010a045

文献信息

• Time-economical synthesis of selenofunctionalized heterocycles <i>via</i> I₂O₅-mediated selenylative heterocyclization
  作者：Chen-Fan Zhou、Yun-Qian Zhang、Yong Ling、Liang Ming、Xia Xi、Gong-Qing Liu、Yanan Zhang

  DOI：10.1039/d1ob02196f

  日期：——

  A time-economical and robust synthesis of various selenofunctionalized heterocycles was accomplished via I2O5-mediated selenocyclizations of olefins with diselenides. Using this method, 116 selenomethyl-substituted heterocycles were synthesized with up to 97% isolated yield in minutes. Additional features of this new protocol include the use of an inorganic oxidant, mild conditions, and easy operation

  通过I 2 O 5介导的烯烃与二硒化物的硒环化，实现了各种硒官能化杂环的经济且稳健的合成。使用这种方法，在几分钟内合成了 116 个硒甲基取代的杂环，分离产率高达 97%。这个新协议的其他特点包括使用无机氧化剂、温和的条件和易于操作。初步研究表明，这种转化是通过硒基碘诱导的亲电环化进行的。
• Electrochemical Chalcogenation of <i>β,γ</i> ‐Unsaturated Amides and Oximes to Corresponding Oxazolines and Isoxazolines
  作者：Samrat Mallick、Mrinmay Baidya、Kingshuk Mahanty、Debabrata Maiti、Suman De Sarkar

  DOI：10.1002/adsc.201901262

  日期：2020.3.4

  The current report represents a transition‐metal‐free synthesis of oxazoline and isoxazoline derivatives by a tandem electro‐oxidative chalcogenation‐cyclization process. Both C−Se and C−S bond‐forming protocols were developed without using any external oxidant and the reaction was performed at room temperature, open to the air. Using this methodology, 29 substituted oxazoline and 16 substituted isoxazoline

  本报告显示了通过串联电氧化硫属元素化-环化过程的无过渡金属合成恶唑啉和异恶唑啉衍生物。C-Se和C-S键形成方案均不使用任何外部氧化剂而开发，并且反应在室温下进行，并且对空气开放。使用这种方法，合成了29个取代的恶唑啉和16个取代的异恶唑啉衍生物，分离产率高达91％。
• Elimination reactions of terminal .beta.-oxy selenoxides. Synthesis of aryl and vinyl enol ethers and of furans, oxazoles, and thiazoles
  作者：Marcello Tiecco、Lorenzo Testaferri、Marco Tingoli、Francesca Marini

  DOI：10.1021/jo00058a011

  日期：1993.3

  Elimination reactions of terminal selenoxides holding an alkoxy group in the beta position, RCH-(OR)CH2SeOPh, are usually difficult and can give rise to complex reaction mixtures. We report that these reactions take place more easily whenever the oxygen atom is linked to an unsaturated group (-CH=CHR, -Ar, -CR=O, -CH=NR). These selenoxides are easily available, and the elimination reaction was employed to effect useful syntheses of both open-chain and cyclic aryl and vinyl enol ethers. Moreover, by simple isomerization with acids or bases the cyclic derivatives can be transformed into the corresponding furans. The same procedure has been employed to synthesize substituted oxazoles and thiazoles also.