5-methylene-2-phenyl-4,5-dihydrothiazole | 146896-53-9

• 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: 5-methylene-2-phenyl-4,5-dihydrothiazole
• 英文别名: 5-methylidene-2-phenyl-4H-1,3-thiazole
• CAS: 146896-53-9
• 化学式: C₁₀H₉NS
• 分子量: 175.254
• InChiKey: ADFKNUVXFZXRHI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.1
• 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：

  5-methylene-2-phenyl-4,5-dihydrothiazole 在 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 苯 为溶剂， 反应 2.0h， 以95%的产率得到5-methyl-2-phenylthiazole
  参考文献：
  名称：

  Elimination reactions of terminal .beta.-oxy selenoxides. Synthesis of aryl and vinyl enol ethers and of furans, oxazoles, and thiazoles

  摘要：

  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.

  DOI：

  10.1021/jo00058a011
• 作为产物：
  描述：

  2-phenyl-5-((phenylselanyl)methyl)-4,5-dihydrothiazole 在 双氧水 、 碳酸氢钠 作用下， 以 甲醇 、 苯 为溶剂， 反应 5.0h， 生成 5-methylene-2-phenyl-4,5-dihydrothiazole
  参考文献：
  名称：

  Elimination reactions of terminal .beta.-oxy selenoxides. Synthesis of aryl and vinyl enol ethers and of furans, oxazoles, and thiazoles

  摘要：

  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.

  DOI：

  10.1021/jo00058a011

文献信息

• Iridium‐Catalyzed Asymmetric Allylic Aromatization Reaction
  作者：Xi‐Jia Liu、Chao Zheng、Yi‐Han Yang、Shicheng Jin、Shu‐Li You

  DOI：10.1002/anie.201904156

  日期：2019.7.29

  Described herein is an asymmetric allylic aromatization (AAAr) strategy that employs readily accessible equivalents of benzylic nucleophiles in iridium‐catalyzed allylic substitution reactions with the concomitant formation of aromatic rings by aromatization. The optimized reaction conditions involving a catalyst derived from a commercially available iridium precursor and the Carreira ligand are compatible

  本文描述的是一种不对称的烯丙基芳构化（AAAr）策略，该方法在铱催化的烯丙基取代反应中采用易于接近的苄基亲核试剂等价物，并伴随通过芳构化形成芳环。优化的反应条件涉及衍生自市售铱前体和Carreira配体的催化剂，可与衍生自4-或5-甲基恶唑，5-甲基噻唑，4-或5-甲基呋喃，2-或3-呋喃的苄基亲核试剂的当量相容甲基苯并呋喃，3-甲基苯并噻吩，3-甲基吲哚，1-甲基萘和甲基苯。该策略提供对映纯形式的直接获得有价值的杂环芳香族化合物的方法，该芳香族芳香族化合物带有对映纯形式的均具有苄基立体异构中心。
• 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.