N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfanyl)acetamide | 908863-60-5

• 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)acetamide
• 英文别名: 2-(benzo[d]thiazol-2-ylthio)-N-methoxy-N-methylacetamide；2-(1,3-benzothiazol-2-ylsulfanyl)-N-methoxy-N-methylacetamide
• CAS: 908863-60-5
• 化学式: C₁₁H₁₂N₂O₂S₂
• mdl: MFCD19445184
• 分子量: 268.36
• InChiKey: CLZMSSOSRQTWSY-UHFFFAOYSA-N

物化性质

• 沸点：
  379.9±52.0 °C(Predicted)
• 密度：
  1.36±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.272
• 拓扑面积：
  96
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  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
• 作为产物：
  描述：

  2-溴-N-甲氧基-N-甲基乙酰胺 、 sodium 2-mercaptobenzothiazole 以 N,N-二甲基甲酰胺 为溶剂， 反应 4.0h， 以10.1 g的产率得到N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfanyl)acetamide
  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

• New Reagent for Convenient Access to the α,β-UnsaturatedN-Methoxy-N-methyl-amide Functionality by a Synthesis Based on the Julia Olefination Protocol
  作者：Beedimane Narayana Manjunath、Neeraj P. Sane、Indrapal Singh Aidhen

  DOI：10.1002/ejoc.200600126

  日期：2006.6

  A new reagent for the synthesis of the α,β-unsaturated N-methoxy-N-methyl-amide structural unit has been developed. 2-(Benzo[d]thiazol-2-ylsulfonyl)-N-methoxy-N-methylacetamide, a crystalline solid with an indefinite shelf life that can be easily prepared in two convenient steps from 2-chloro-N-methoxy-N-methylacetamide, reacted with a variety of aldehydes under Julia conditions to furnish the α,β-unsaturated

  开发了一种用于合成α,β-不饱和N-甲氧基-N-甲基-酰胺结构单元的新试剂。2-(苯并[d]噻唑-2-基磺酰基)-N-甲氧基-N-甲基乙酰胺，一种具有无限保质期的结晶固体，可以通过两个方便的步骤从 2-氯-N-甲氧基-N-轻松制备甲基乙酰胺，在 Julia 条件下与多种醛反应以提供 α,β-不饱和 N-甲氧基-N-甲基-酰胺官能团。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)
• 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.