cis-(+)-1-(p-anisyl)-3-(benzyloxy)-4-(formyloxy)-2-azetidinone | 164031-76-9

• 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: cis-(+)-1-(p-anisyl)-3-(benzyloxy)-4-(formyloxy)-2-azetidinone
• 英文别名: [(2S,3R)-1-(4-methoxyphenyl)-4-oxo-3-phenylmethoxyazetidin-2-yl] formate
• CAS: 164031-76-9
• 化学式: C₁₈H₁₇NO₅
• 分子量: 327.337
• InChiKey: QRUGAGZEMFEFKW-WMZOPIPTSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  24
• 可旋转键数：
  7
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.22
• 拓扑面积：
  65.1
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  cis-(+)-1-(p-anisyl)-3-(benzyloxy)-4-(formyloxy)-2-azetidinone 在 sulfonyl diimidazole 、 sodium tetrahydroborate 、 ammonium cerium(IV) nitrate 、 sodium hydride 作用下， 以 甲醇 、 水 、 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 反应 1.5h， 生成 (3R)-3-benzyloxyazetidin-2-one
  参考文献：
  名称：

  Stereoselective Synthesis of 3-Substituted 4-(Formyloxy)-2-azetidinones by the Unusual Baeyer−Villiger Reaction of β-Lactam Aldehydes. Scope and Synthetic Applications

  摘要：

  The Baeyer-Villiger oxidation of 4-formyl-beta-lactams 1 with m-CPBA gave 4-(formyloxy) beta-lactams 2 in a simple, efficient, and totally stereoselective process. This reaction is one of the scarce examples of the preferred migration of a carbon moiety in an aliphatic aldehyde. The influence of the substituents at N1 and C3 of the four-membered ring in the Baeyer-Villiger rearrangement has been studied. Thus, alkyl, alkenyl, aryl, and alkyloxy 3-substituted-1-(p-anisyl)-2-azetidinone 1 form exclusively 4-(formyloxy) beta-lactams 2. Amide or acetoxy substituents at C3 of the four-membered ring produce mixtures of 4-(formyloxy) beta-lactams 2 and 4-carboxy beta-lactams 5. The exclusive formation of carboxy derivatives is observed sometimes for 1-alkyl-substituted-2-azetidinones 1. 4-(Formyloxy) beta-lactams 2 are suitable starting materials to prepare different 4-unsubstituted beta-lactams 9 using beta-hydroxy amides 8 as isolable intermediates. The overall transformation 4-formyl-2-azetidinone to 4-unsubstituted beta-lactam is an easy and convenient stereoselective route to these interesting types of compounds.

  DOI：

  10.1021/jo9612685
• 作为产物：
  描述：

  (+)-(3R,4R)-1-(p-anisyl)-3-benzyloxy-4-formyl-2-azetidinone 在 间氯过氧苯甲酸 作用下， 以 二氯甲烷 为溶剂， 反应 2.0h， 以94%的产率得到cis-(+)-1-(p-anisyl)-3-(benzyloxy)-4-(formyloxy)-2-azetidinone
  参考文献：
  名称：

  Stereoselective Synthesis of 3-Substituted 4-(Formyloxy)-2-azetidinones by the Unusual Baeyer−Villiger Reaction of β-Lactam Aldehydes. Scope and Synthetic Applications

  摘要：

  The Baeyer-Villiger oxidation of 4-formyl-beta-lactams 1 with m-CPBA gave 4-(formyloxy) beta-lactams 2 in a simple, efficient, and totally stereoselective process. This reaction is one of the scarce examples of the preferred migration of a carbon moiety in an aliphatic aldehyde. The influence of the substituents at N1 and C3 of the four-membered ring in the Baeyer-Villiger rearrangement has been studied. Thus, alkyl, alkenyl, aryl, and alkyloxy 3-substituted-1-(p-anisyl)-2-azetidinone 1 form exclusively 4-(formyloxy) beta-lactams 2. Amide or acetoxy substituents at C3 of the four-membered ring produce mixtures of 4-(formyloxy) beta-lactams 2 and 4-carboxy beta-lactams 5. The exclusive formation of carboxy derivatives is observed sometimes for 1-alkyl-substituted-2-azetidinones 1. 4-(Formyloxy) beta-lactams 2 are suitable starting materials to prepare different 4-unsubstituted beta-lactams 9 using beta-hydroxy amides 8 as isolable intermediates. The overall transformation 4-formyl-2-azetidinone to 4-unsubstituted beta-lactam is an easy and convenient stereoselective route to these interesting types of compounds.

  DOI：

  10.1021/jo9612685

文献信息

• The unusual Baeyer-Villiger rearrangement of β-lactam aldehydes: Totally stereoselective entry to cis-3-substituted 4-formyloxy-2-azetidinones
  作者：Benito Alcaide、Moustafa F. Aly、Miguel A. Sierra

  DOI：10.1016/0040-4039(95)00492-u

  日期：1995.5

  Baeyer-Villiger oxidation of 4-formyl-β-lactams 1 with m-chloroperbenzoic acid in dichloromethane at room temperature is shown to be a convenient method for the preparation of 4-formyloxy-β-lactams 2. Some reactions of novel compounds 2 are also desrcribed.

  的拜尔-维利格氧化4-甲酰基- β内酰胺1与米中在室温下的二氯甲烷氯过苯甲酸被证明是4-甲酰-β内酰胺的制备的简便方法2。还描述了新型化合物2的一些反应。
• Stereoselective Synthesis of 3-Substituted 4-(Formyloxy)-2-azetidinones by the Unusual Baeyer−Villiger Reaction of β-Lactam Aldehydes. Scope and Synthetic Applications
  作者：Benito Alcaide、Moustafa F. Aly、Miguel A. Sierra

  DOI：10.1021/jo9612685

  日期：1996.1.1

  The Baeyer-Villiger oxidation of 4-formyl-beta-lactams 1 with m-CPBA gave 4-(formyloxy) beta-lactams 2 in a simple, efficient, and totally stereoselective process. This reaction is one of the scarce examples of the preferred migration of a carbon moiety in an aliphatic aldehyde. The influence of the substituents at N1 and C3 of the four-membered ring in the Baeyer-Villiger rearrangement has been studied. Thus, alkyl, alkenyl, aryl, and alkyloxy 3-substituted-1-(p-anisyl)-2-azetidinone 1 form exclusively 4-(formyloxy) beta-lactams 2. Amide or acetoxy substituents at C3 of the four-membered ring produce mixtures of 4-(formyloxy) beta-lactams 2 and 4-carboxy beta-lactams 5. The exclusive formation of carboxy derivatives is observed sometimes for 1-alkyl-substituted-2-azetidinones 1. 4-(Formyloxy) beta-lactams 2 are suitable starting materials to prepare different 4-unsubstituted beta-lactams 9 using beta-hydroxy amides 8 as isolable intermediates. The overall transformation 4-formyl-2-azetidinone to 4-unsubstituted beta-lactam is an easy and convenient stereoselective route to these interesting types of compounds.