3-phenoxy-4-(2'-phenylethenyl)-2-azetidinone | 123525-47-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 内酰胺类
• 英文名称: 3-phenoxy-4-(2'-phenylethenyl)-2-azetidinone
• 英文别名: 3-phenoxy-4-styrylazetidin-2-one；(3S,4R)-3-phenoxy-4-[(E)-2-phenylethenyl]azetidin-2-one
• CAS: 123525-47-3
• 化学式: C₁₇H₁₅NO₂
• 分子量: 265.312
• InChiKey: SMFKCRVPSRDYFU-OEPMCUGXSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  20
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  38.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  (3S,4R)-3-Phenoxy-4-((E)-styryl)-1-vinyl-azetidin-2-one 在 盐酸 、 sodium carbonate 作用下， 生成 3-phenoxy-4-(2'-phenylethenyl)-2-azetidinone
  参考文献：
  名称：

  Stereocontrolled synthesis of N-vinyl-, N-(1'-propenyl)-, and N-unsubstituted-.beta.-lactams from 2-aza-1,3-butadienes via the Staudinger reaction

  摘要：

  2-Aza-1,3-butadienes 2 and 5 were synthesized in good yields and on a large scale. Reaction of 2 and 5 with acid chlorides in the presence of triethylamine (Staudinger reaction) resulted in the high-yielding formation of N-vinyl- and N-(1'-propenyl)-beta-lactams. Excellent cis-stereoselectivity was observed in the reaction of 2-aza-1,3-butadienes 2 and 5 with Bose-Evans ketenes and Sheehan ketenes, whereas reaction with a Moore ketene gave, as expected, a trans beta-lactam. N-Formyl, N-vinyl, and N-(1'-propenyl) groups at the beta-lactam nitrogen could be cleaved oxidatively in one step and in good yields by treatment with potassium permanganate. It was also found that the N-vinyl group can be removed successfully under hydrolytic, conditions to yield N-unsubstituted-beta-lactams.

  DOI：

  10.1021/jo00073a042

文献信息

• From Solution-Phase to ‘On-Column’ N-Dearylation of β-Lactams by Silica-Supported Ceric Ammonium Nitrate (CAN-SiO₂)
  作者：Aliasghar Jarrahpour、Maaroof Zarei

  DOI：10.1055/s-2008-1032051

  日期：2008.2

  It has been shown that N-(4-methoxy or 4-ethoxyphenyl) groups can be oxidatively removed by silica gel supported ceric ammonium nitrate (CAN-SiO2) under mild conditions in solution and on column. The yields in these two methods were good to excellent and purification of products is simpler than the general method by CAN. Especially the ‘on-column’ reaction is mild, easy, efficient, and cheap. The lower mobility of CAN-SiO2 makes it safer to handle.

  研究表明，N-(4-甲氧基或4-乙氧基苯基)基团可以在温和条件下通过硅胶支持的铈铵硝酸盐（CAN-SiO2）进行氧化去除。在这两种方法中，产率均为良好至优秀，产品的纯化也比一般的CAN方法简单。特别是“柱上”反应温和、简单、高效且成本低廉。CAN-SiO2的较低流动性使其更安全易于操作。
• Sharma; Khurana, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1989, vol. 28, # 1, p. 97 - 99
  作者：Sharma、Khurana

  DOI：——

  日期：——
• Solid‐Solid Phase and Solvent‐Free Oxidative Removal of<i>N</i>‐(4‐Alkoxyphenyl) Groups of Monocyclic β‐Lactams with Ceric Ammonium Nitrate as a Cheap, Simple, and Efficient Method
  作者：Aliasghar Jarrahpour、M. Zarei

  DOI：10.1080/00397910801981326

  日期：2008.5

  Five N-(4-methoxyphenyl)- and five N-(4-ethoxyphenyl)-beta-lactams were prepared by ketene-imine [2+2] cycloaddition (Staudinger reaction). Then these 2-azetidinones were N-dearylated by grinding together with ceric ammonium nitrate without hazardous solvents in good to excellent yields. The solid-solid phase N-dearylation is easier, simpler, and more efficient than the general method in solution. The pure N-unsubstituted beta-lactams obtained by a nontedious workup and without further purification.
• Stereocontrolled synthesis of N-vinyl-, N-(1'-propenyl)-, and N-unsubstituted-.beta.-lactams from 2-aza-1,3-butadienes via the Staudinger reaction
  作者：Gunda I. Georg、Ping He、Joydeep Kant、Zhin Jun Wu

  DOI：10.1021/jo00073a042

  日期：1993.10

  2-Aza-1,3-butadienes 2 and 5 were synthesized in good yields and on a large scale. Reaction of 2 and 5 with acid chlorides in the presence of triethylamine (Staudinger reaction) resulted in the high-yielding formation of N-vinyl- and N-(1'-propenyl)-beta-lactams. Excellent cis-stereoselectivity was observed in the reaction of 2-aza-1,3-butadienes 2 and 5 with Bose-Evans ketenes and Sheehan ketenes, whereas reaction with a Moore ketene gave, as expected, a trans beta-lactam. N-Formyl, N-vinyl, and N-(1'-propenyl) groups at the beta-lactam nitrogen could be cleaved oxidatively in one step and in good yields by treatment with potassium permanganate. It was also found that the N-vinyl group can be removed successfully under hydrolytic, conditions to yield N-unsubstituted-beta-lactams.