(3S,4R)-4-(naphthalene-2-yl)-3-phenyl-1-tosylazetidin-2-one | 1556907-01-7

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二苯乙烯类
• 英文名称: (3S,4R)-4-(naphthalene-2-yl)-3-phenyl-1-tosylazetidin-2-one
• 英文别名: (3S,4R)-4-(naphthalen-2-yl)-3-phenyl-1-tosylazetidin-2-one；(3S,4R)-1-(4-methylphenyl)sulfonyl-4-naphthalen-2-yl-3-phenylazetidin-2-one
• CAS: 1556907-01-7
• 化学式: C₂₆H₂₁NO₃S
• 分子量: 427.524
• InChiKey: WBOHBVQBZUHNLG-DQEYMECFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.4
• 重原子数：
  31
• 可旋转键数：
  4
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  62.8
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  4-(naphthalene-2-yl)-3-phenyl-1-tosylazetidin-2-one 在 (2S,3R)-3,4-二氢-3-异丙基-2-苯基-2H-嘧啶并[2,1-b]苯并噻唑 、 N,N-二异丙基乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 3.0h， 以32%的产率得到
  参考文献：
  名称：

  Isothiourea-Catalyzed Asymmetric Synthesis of β-Lactams and β-Amino Esters from Arylacetic Acid Derivatives and N-Sulfonylaldimines

  摘要：

  The isothiourea HBTM-2.1 (5 mol %) catalyzes the asymmetric formal [2 + 2] cycloaddition of both arylacetic acids (following activation with tosyl chloride) and preformed 2-arylacetic anhydrides with N-sulfonylaldimines, generating stereo-defined 2,3-diaryl-beta-amino esters (after ring-opening) and 3,4-diaryl-anti-beta-lactams, respectively, with high diastereocontrol (up to >95:5 dr) and good to excellent enantiocontrol. Deprotection of the N-tosyl substituent within the beta-lactam framework was possible without racemization by treatment with SmI2.

  DOI：

  10.1021/jo402590m

文献信息

• Catalytic Generation of C1 Ammonium Enolates from Halides and CO for Asymmetric Cascade Reactions
  作者：Lu‐Lu Li、Du Ding、Jin Song、Zhi‐Yong Han、Liu‐Zhu Gong

  DOI：10.1002/anie.201901501

  日期：2019.6.3

  the design of asymmetric cascade reactions using readily available halides and carbon monoxide (CO) as substrates is developed. The key is the catalytic generation of C1‐ammonium enolates for the subsequent asymmetric cascade reactions through the combination of palladium‐catalyzed carbonylation and chiral Lewis base catalysis. Utilizing this strategy, we have established asymmetric formal [1+1+4]

  提出了使用不易获得的卤化物和一氧化碳（CO）作为底物设计不对称级联反应的一般策略。关键是通过钯催化的羰基化和手性Lewis碱催化相结合，可为随后的不对称级联反应催化生成C1-氨基烯醇盐。利用这种策略，我们建立了不对称的形式[1 + 1 + 4]和[1 + 1 + 2]反应，从而以高收率，高对映体和非对映体选择性提供了手性二氢吡啶酮和β-内酰胺。
• Isothiourea-Catalyzed Asymmetric Synthesis of β-Lactams and β-Amino Esters from Arylacetic Acid Derivatives and <i>N</i>-Sulfonylaldimines
  作者：Siobhan R. Smith、James Douglas、Hugues Prevet、Peter Shapland、Alexandra M. Z. Slawin、Andrew D. Smith

  DOI：10.1021/jo402590m

  日期：2014.2.21

  The isothiourea HBTM-2.1 (5 mol %) catalyzes the asymmetric formal [2 + 2] cycloaddition of both arylacetic acids (following activation with tosyl chloride) and preformed 2-arylacetic anhydrides with N-sulfonylaldimines, generating stereo-defined 2,3-diaryl-beta-amino esters (after ring-opening) and 3,4-diaryl-anti-beta-lactams, respectively, with high diastereocontrol (up to >95:5 dr) and good to excellent enantiocontrol. Deprotection of the N-tosyl substituent within the beta-lactam framework was possible without racemization by treatment with SmI2.