N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfanyl)fluoroacetamide | 1149578-17-5

• 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: N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfanyl)fluoroacetamide
• 英文别名: 2-(benzo[d]thiazol-2-ylsulfyl)-2-fluoro-N-methoxy-N-methylacetamide；2-(1,3-benzothiazol-2-ylsulfanyl)-2-fluoro-N-methoxy-N-methylacetamide
• CAS: 1149578-17-5
• 化学式: C₁₁H₁₁FN₂O₂S₂
• 分子量: 286.351
• InChiKey: YRRBRUPGKDNTAV-UHFFFAOYSA-N

物化性质

• 沸点：
  354.9±52.0 °C(predicted)
• 密度：
  1.41±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  18
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  96
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfanyl)fluoroacetamide 在 chromium(VI) oxide 、 高碘酸 作用下， 以 乙腈 为溶剂， 以82%的产率得到2-(benzo[d]thiazol-2-ylsulfonyl)-2-fluoro-N-methoxy-N-methylacetamide
  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)acetamide 在 lithium diisopropyl amide 、 N-氟代双苯磺酰胺 作用下， 以 四氢呋喃 、 正庚烷 、 乙基苯 、 甲苯 为溶剂， 以83%的产率得到N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfanyl)fluoroacetamide
  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

• Expedient synthesis of α-substituted fluoroethenes
  作者：Samir K. Mandal、Arun K. Ghosh、Rakesh Kumar、Barbara Zajc

  DOI：10.1039/c2ob07031f

  日期：——

  mild and efficient synthesis of 1-aryl-1-fluoroethenes from benzothiazolyl (aryl)fluoromethyl sulfones and paraformaldehyde, under DBU- or Cs2CO3-mediated conditions at room temperature, is described. A comparable diethyl fluoro(naphthalen-2-yl)methylphosphonate reagent does not react with paraformaldehyde under these mild conditions. The utility of the methodology for synthesis of terminal α-fluoroalkenes

  描述了在室温下，在 DBU 或 Cs 2 CO 3介导的条件下，由苯并噻唑基（芳基）氟甲基砜和多聚甲醛温和有效地合成 1-芳基-1-氟乙烯。类似的氟（萘-2-基）甲基膦酸二乙酯试剂在这些温和条件下不会与多聚甲醛发生反应。还显示了该方法用于合成带有吸电子官能团的末端 α-氟代烯烃的实用性。