(1,3-benzothiazol-2-ylsulfanyl)fluoromethyl n-propyl ketone | 1149578-19-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并噻唑类
• 英文名称: (1,3-benzothiazol-2-ylsulfanyl)fluoromethyl n-propyl ketone
• 英文别名: 1-(1,3-Benzothiazol-2-ylsulfanyl)-1-fluoropentan-2-one
• CAS: 1149578-19-7
• 化学式: C₁₂H₁₂FNOS₂
• 分子量: 269.364
• InChiKey: MYVJMPSQCSVULT-UHFFFAOYSA-N

物化性质

• 沸点：
  363.5±52.0 °C(predicted)
• 密度：
  1.30±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  17
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  83.5
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  (1,3-benzothiazol-2-ylsulfanyl)fluoromethyl n-propyl ketone 在 chromium(VI) oxide 、 高碘酸 作用下， 以 乙腈 为溶剂， 以87%的产率得到(1,3-benzothiazol-2-ylsulfonyl)fluoromethyl n-propyl ketone
  参考文献：
  名称：

  α-Fluorovinyl Weinreb Amides and α-Fluoroenones from a Common Fluorinated Building Block

  摘要：

  Synthesis and reactivity of N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfonyl)fluoroacetamide, a building block for Julia olefination, is reported. This reagent undergoes condensation reactions with aldehydes and cyclic ketones to give alpha-fluorovinyl Weinreb amides. Olefination reactions proceed under mild, DBU-mediated conditions, or in the presence of NaH. DBU-mediated condensations proceed with either E- or Z-selectivity, depending upon reaction conditions, whereas NaH-mediated reactions are >= 98% Z-stereoselective. Conversion of the Weinreb amide moiety in N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfanyl)fluoroacetamide to ketones, followed by oxidation, resulted in another set of olefination reagents, namely (1,3-benzothiazol-2-ylsulfonyl)fluoromethyl phenyl and propyl ketones. In the presence of DBU, these compounds react with aldehydes tested to give alpha-fluoroenones with high Z-selectivity. The use of N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfanyl)fluoroacetamide as a common fluorinated intermediate in the synthesis of alpha-fluorovinyl Weinreb amides and alpha-fluoroenones has been demonstrated. Application of the Weinreb amide to alpha-flu-fluoro allyl amine synthesis is also shown.

  DOI：

  10.1021/jo802784w
• 作为产物：
  描述：

  N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfanyl)fluoroacetamide 、 丙基溴化镁 以 四氢呋喃 为溶剂， 以81%的产率得到(1,3-benzothiazol-2-ylsulfanyl)fluoromethyl n-propyl ketone
  参考文献：
  名称：

  α-Fluorovinyl Weinreb Amides and α-Fluoroenones from a Common Fluorinated Building Block

  摘要：

  Synthesis and reactivity of N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfonyl)fluoroacetamide, a building block for Julia olefination, is reported. This reagent undergoes condensation reactions with aldehydes and cyclic ketones to give alpha-fluorovinyl Weinreb amides. Olefination reactions proceed under mild, DBU-mediated conditions, or in the presence of NaH. DBU-mediated condensations proceed with either E- or Z-selectivity, depending upon reaction conditions, whereas NaH-mediated reactions are >= 98% Z-stereoselective. Conversion of the Weinreb amide moiety in N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfanyl)fluoroacetamide to ketones, followed by oxidation, resulted in another set of olefination reagents, namely (1,3-benzothiazol-2-ylsulfonyl)fluoromethyl phenyl and propyl ketones. In the presence of DBU, these compounds react with aldehydes tested to give alpha-fluoroenones with high Z-selectivity. The use of N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfanyl)fluoroacetamide as a common fluorinated intermediate in the synthesis of alpha-fluorovinyl Weinreb amides and alpha-fluoroenones has been demonstrated. Application of the Weinreb amide to alpha-flu-fluoro allyl amine synthesis is also shown.

  DOI：

  10.1021/jo802784w

文献信息

• α-Fluorovinyl Weinreb Amides and α-Fluoroenones from a Common Fluorinated Building Block
  作者：Arun K. Ghosh、Shaibal Banerjee、Saikat Sinha、Soon Bang Kang、Barbara Zajc

  DOI：10.1021/jo802784w

  日期：2009.5.15

  Synthesis and reactivity of N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfonyl)fluoroacetamide, a building block for Julia olefination, is reported. This reagent undergoes condensation reactions with aldehydes and cyclic ketones to give alpha-fluorovinyl Weinreb amides. Olefination reactions proceed under mild, DBU-mediated conditions, or in the presence of NaH. DBU-mediated condensations proceed with either E- or Z-selectivity, depending upon reaction conditions, whereas NaH-mediated reactions are >= 98% Z-stereoselective. Conversion of the Weinreb amide moiety in N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfanyl)fluoroacetamide to ketones, followed by oxidation, resulted in another set of olefination reagents, namely (1,3-benzothiazol-2-ylsulfonyl)fluoromethyl phenyl and propyl ketones. In the presence of DBU, these compounds react with aldehydes tested to give alpha-fluoroenones with high Z-selectivity. The use of N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfanyl)fluoroacetamide as a common fluorinated intermediate in the synthesis of alpha-fluorovinyl Weinreb amides and alpha-fluoroenones has been demonstrated. Application of the Weinreb amide to alpha-flu-fluoro allyl amine synthesis is also shown.
• Asymmetric Organocatalytic Monofluorovinylations
  作者：Christian Borch Jacobsen、Martin Nielsen、Dennis Worgull、Theo Zweifel、Esben Fisker、Karl Anker Jørgensen

  DOI：10.1021/ja110624k

  日期：2011.5.18

  The development of highly enantio- and c organocatalytic monofluorovinylations is presented. Based on the application of alpha-fluoro beta-keto-benzothiazolesulfones, the formal addition of a monofluorovinylic anion synthon to a range of acydic and cyclic enones, as well as imines, is shown. These procedures give selective access to both E- and Z-isomers of the monofluorovinylated products, which are isolated as the pure diastereoisomers in good to excellent yields with up to 99% ee. Furthermore, the application of this concept for the formation of highly enantioenriched bicylic compounds containing a monofluorovinyl moiety is also described. In addition, a mechanistic rationale for the observed E:Z-selectivities is presented.