3-benzyl-2-oxo-3-(trifluoroacetamido)piperidine | 133270-15-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 哌啶类
• 英文名称: 3-benzyl-2-oxo-3-(trifluoroacetamido)piperidine
• 英文别名: N-(3-benzyl-2-oxopiperidin-3-yl)-2,2,2-trifluoroacetamide
• CAS: 133270-15-2
• 化学式: C₁₄H₁₅F₃N₂O₂
• 分子量: 300.281
• InChiKey: KCZOAJQFSVDWLM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  21
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  58.2
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  3-benzyl-2-oxo-3-(trifluoroacetamido)piperidine 在 barium dihydroxide 、 1-羟基苯并三唑一水物 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下， 以 甲醇 、 N,N-二甲基甲酰胺 为溶剂， 反应 18.0h， 生成 N-(Boc-Asp(OBn))-3-amino-3-b4enzyl-2-oxopiperidine
  参考文献：
  名称：

  Synthesis of .alpha.-benzyl .gamma.-lactam, .alpha.-benzyl .delta.-lactam, and .alpha.-benzylproline derivatives as conformationally restricted analogs of phenylalaninamide

  摘要：

  The ready availability of N-(trifluoroacetyl)-alpha-allylphenylalaninamide (4) via a dehydration/hetero-Cope rearrangement/ammonolysis sequence starting with N-(trifluoroacetyl)phenylalanine allyl ester made it an attractive intermediate for elaboration into C-alpha to N- or C-alpha to N'bridged products as conformationally restricted phenylalaninamide analogues. Oxidative one-carbon degradation of the side-chain olefin followed by acid-catalyzed silane reduction afforded C-alpha to N'-bridged gamma-lactam. Hydroboration/oxidation of the side-chain olefin provided an intermediate that could be cyclized selectively either to a delta-lactam or a proline analogue depending on choice of dehydrating conditions. For preparation of a target dipeptide containing the alpha-substituted proline moiety, a preferred route involved N-deprotection of 4 and coupling to Boc-Asp(OBn)-OH to give a dipeptide intermediate, which similarly could be elaborated selectively to either the alpha-benzyl delta-lactam analogue or the alpha-benzylproline analogue.

  DOI：

  10.1021/jo00012a022
• 作为产物：
  描述：

  N-(trifluoroacetyl)-L-phenylalanine allyl ester 在 吡啶 、 三乙基硅烷 、 光气 、 ammonium hydroxide 、 bis(cyclohexanyl)borane 、 三氧化硫 、 双氧水 、 三乙胺 、 三氟乙酸 作用下， 以 四氢呋喃 、 甲苯 、 乙腈 为溶剂， 反应 21.92h， 生成 3-benzyl-2-oxo-3-(trifluoroacetamido)piperidine
  参考文献：
  名称：

  Synthesis of .alpha.-benzyl .gamma.-lactam, .alpha.-benzyl .delta.-lactam, and .alpha.-benzylproline derivatives as conformationally restricted analogs of phenylalaninamide

  摘要：

  The ready availability of N-(trifluoroacetyl)-alpha-allylphenylalaninamide (4) via a dehydration/hetero-Cope rearrangement/ammonolysis sequence starting with N-(trifluoroacetyl)phenylalanine allyl ester made it an attractive intermediate for elaboration into C-alpha to N- or C-alpha to N'bridged products as conformationally restricted phenylalaninamide analogues. Oxidative one-carbon degradation of the side-chain olefin followed by acid-catalyzed silane reduction afforded C-alpha to N'-bridged gamma-lactam. Hydroboration/oxidation of the side-chain olefin provided an intermediate that could be cyclized selectively either to a delta-lactam or a proline analogue depending on choice of dehydrating conditions. For preparation of a target dipeptide containing the alpha-substituted proline moiety, a preferred route involved N-deprotection of 4 and coupling to Boc-Asp(OBn)-OH to give a dipeptide intermediate, which similarly could be elaborated selectively to either the alpha-benzyl delta-lactam analogue or the alpha-benzylproline analogue.

  DOI：

  10.1021/jo00012a022

文献信息

• HOLLADAY, M. W.;NADZAN, A. M., J. ORG. CHEM., 56,(1991) N2, C. 3900-3905
  作者：HOLLADAY, M. W.、NADZAN, A. M.

  DOI：——

  日期：——