2-(benzo[d]thiazol-2-ylsulfonyl)-N-methoxy-N-methylacetamide | 908863-61-6

• 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: 2-(benzo[d]thiazol-2-ylsulfonyl)-N-methoxy-N-methylacetamide
• 英文别名: N-methoxy-N-methyl-(1,3-benzothiazol-2-ylsulfonyl)acetamide；2-(1,3-benzothiazol-2-ylsulfonyl)-N-methoxy-N-methylacetamide
• CAS: 908863-61-6
• 化学式: C₁₁H₁₂N₂O₄S₂
• 分子量: 300.359
• InChiKey: DTUAIXSZEQBTJE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  19
• 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：
  113
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  2-(benzo[d]thiazol-2-ylsulfonyl)-N-methoxy-N-methylacetamide 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， 反应 0.25h， 以85%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 sodium tungstate 、 双氧水 作用下， 以 甲醇 为溶剂， 以75%的产率得到2-(benzo[d]thiazol-2-ylsulfonyl)-N-methoxy-N-methylacetamide
  参考文献：
  名称：

  通过基于 Julia 烯烃化方案的合成方便地获得 α,β-不饱和 N-甲氧基-N-甲基-酰胺官能团的新试剂

  摘要：

  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)

  DOI：

  10.1002/ejoc.200600126

文献信息

• Stereoselective Olefination and Regiospecific Vicinal Difunctionalization of Imines with α-(Benzothiazol-2-ylsulfonyl) Carbonyl Compounds
  作者：You-Dong Shao、Xue-Song Wu、Shi-Kai Tian

  DOI：10.1002/ejoc.201101684

  日期：2012.3

  Depending on their structures, imines are able to undergo either olefination or vicinal difunctionalization with various α-(benzothiazol-2-ylsulfonyl) carbonyl compounds in the absence of external bases. The olefination reaction of aromatic imines with α-(benzothiazol-2-ylsulfonyl) carbonyl compounds proceeds smoothly in tetrahydrofuran at 70 °C to give structurally diverse α,β-unsaturated esters,

  根据它们的结构，亚胺能够在没有外部碱的情况下与各种 α-(苯并噻唑-2-基磺酰基)羰基化合物进行烯化或邻位双官能化。芳族亚胺与 α-(苯并噻唑-2-基磺酰基)羰基化合物的烯化反应在四氢呋喃中在 70°C 下顺利进行，得到结构多样的 α,β-不饱和酯、酰胺和酮，收率良好至极好，并且具有极高的产率(E) 选择性。相比之下，环状亚胺的碳-氮双键和 α,β-不饱和亚胺的碳-碳双键在相同的反应条件下与 α-(苯并噻唑-2-基磺酰基)羰基化合物进行区域特异性邻位双官能化，以良好到极好的收率提供各种苯并噻唑衍生物。值得注意的是，苯并噻唑部分存在于许多抗肿瘤剂和生物发光分子中。此外，已经提出了合理的反应途径来解释这些转变，并且这些反应得到了反应混合物的 ESI-MS 分析的充分支持。
• Diversely C8-functionalized adenine nucleosides <i>via</i> their underexplored carboxaldehydes
  作者：Hari K. Akula、Suyeal Bae、Padmanava Pradhan、Lijia Yang、Barbara Zajc、Mahesh K. Lakshman

  DOI：10.1039/d1cc06686b

  日期：——

  underexploited for C8 modifications of these nucleosides. Only in situ formation of 8-formyladenosine is known and a single application of an N-benzoyl derivative has been reported. On the other hand, 8-formyl-2′-deoxyadenosine and its applications remain unknown. Herein, we report straightforward, scalable syntheses of both N-unprotected 8-formyladenine nucleoside derivatives, and demonstrate broad diversification

  腺苷和 2'-脱氧腺苷的潜在用途广泛的N-未保护 8-甲酰基衍生物在这些核苷的 C8 修饰方面开发不足。只有8-甲酰腺苷的原位形成是已知的，并且已经报道了N-苯甲酰基衍生物的单一应用。另一方面，8-甲酰基-2'-脱氧腺苷及其应用仍然未知。在这里，我们报告了两种N-未保护的 8-甲酰腺嘌呤核苷衍生物的直接、可扩展的合成，并通过羟甲基化、叠氮化、CuAAC 连接、还原胺化以及改性 Julia 和霍纳的烯化和氟烯化证明了 C8 位的广泛多样化–Wadsworth–Emmons 试剂。
• 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.