N,N-diethyl-3-methoxy-2-trimethylsilylbenzamide | 85370-85-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: N,N-diethyl-3-methoxy-2-trimethylsilylbenzamide
• 英文别名: N,N-Diethyl-3-methoxy-2-(trimethylsilyl)benzamide
• CAS: 85370-85-0
• 化学式: C₁₅H₂₅NO₂Si
• 分子量: 279.454
• InChiKey: WHCOCOWXVYYKSL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.72
• 重原子数：
  19
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.53
• 拓扑面积：
  29.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  N,N-diethyl-3-methoxy-2-trimethylsilylbenzamide 在 bis(acetylacetonate)nickel(II) 、 lithium chloro-isopropyl-magnesium chloride 、 四(三苯基膦)钯 、 四甲基乙二胺 、 四丁基氟化铵 、 仲丁基锂 、 三溴化硼 、 sodium hydride 、 sodium carbonate 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 乙二醇二甲醚 、 乙醚 、 乙醇 、 二氯甲烷 、 环己烷 、 水 为溶剂， 反应 18.5h， 生成 2-hydroxy-8-methylphenanthrene
  参考文献：
  名称：

  Directed Metalation–Suzuki–Miyaura Cross-Coupling Strategies: Regioselective Synthesis of Hydroxylated 1-Methyl-phenanthrenes

  摘要：

  A general, efficient, and regioselective synthesis of a series of hydroxylated 1-methylphenanthrenes 9 by a combined directed ortho metalation (DoM)-Suzuki-Miyaura cross-coupling directed remote metalation (DreM) sequence is reported. Diversity to this methodology was achieved by a regioselective DoM rather than DreM reaction, affording more highly substituted phenanthrols (Table 2). Application of the turbo-Grignard reagent (i-PrMgCl-LiCl) in the Ni-catalyzed Corriu-Kumada reaction gave efficient decarbamoylation (Tables 3 and 4). Additional features are the TMS protecting group and halo-induced ipso-desilylation tactics applied to the regioselective synthesis of phenanthrenes (Scheme 2).

  DOI：

  10.1021/acs.joc.5b01300
• 作为产物：
  描述：

  3-甲氧基苯甲酸 在 氯化亚砜 、 四甲基乙二胺 、 仲丁基锂 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 19.0h， 生成 N,N-diethyl-3-methoxy-2-trimethylsilylbenzamide
  参考文献：
  名称：

  Rational design of inhibitors of VirA–VirG two-component signal transduction

  摘要：

  VirA-VirG two-component system regulates the vir (virulence) operon in response to specific host factors (xenognosins) in the plant pathogen Agrobacterium tumefaciens. Using whole cell assays, stable inhibitors inspired by the labile natural benzoxazinone inhibitor HDMBOA are developed. It is found that aromatic aldehydes represent a minimal structural unit for activity. In particular, 3-hydroxy-4,6-dimethoxy-3H-isobenzofuran-1-one (HDI) was found to have the highest activity, making it the most potent developed inhibitor of virulence gene expression in Agrobacterium. (c) 2007 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2007.04.018

文献信息

• Application of directed metalation in synthesis. Part 4: Expedient synthesis of substituted benzo[b]thiophene and naphthothiophene
  作者：Chandrani Mukherjee、Sukanta Kamila、Asish De

  DOI：10.1016/s0040-4020(03)00710-5

  日期：2003.6

  inexpensive synthesis of several diversely substituted benzo[b]thiophenes and one naphthothiophene is described. The method involves introduction of methylsulfanyl group ortho- to the amide function of readily available N,N-diethylamides of aryl carboxylic acid by directed metalation. Thioindoxyls, obtained in high yields through side-chain deprotonation and cyclisation in one pot, are reduced to benzo[b]thiophene

  描述了几种不同取代的苯并[ b ]噻吩和一个萘噻吩的简短，简单和廉价的合成。该方法涉及通过定向金属化将甲基硫烷基邻位引入容易获得的芳基羧酸的N，N-二乙基酰胺的酰胺官能团。通过在一个罐中通过侧链去质子化和环化以高收率获得的硫吲哚酚被还原为苯并[ b ]噻吩或萘噻吩。
• Ortho-amination of lithiated tertiary benzamides. Short route to polysubstituted anthranilamides
  作者：J.N. Reed、V. Snieckus

  DOI：10.1016/s0040-4039(00)94277-1

  日期：1983.1

  Directed lithiation of benzamides (1), phenyloxazoline (4a), methoxymethoxybenzene (4b), and -phenyl carbamate (4c) followed by sequential treatment with TsN3 and NaBH4 constitutes a general route to synthetically useful amino aromatics 3 and 5.

  苯甲酰胺（1），苯恶唑啉（4a），甲氧基甲氧基苯（4b）和氨基甲酸苯酯（4c）的直接锂化反应，然后依次用TsN 3和NaBH 4处理构成合成有用的氨基芳族化合物3和5的一般方法。
• Iridium-Catalyzed CH Activation versus Directed<i>ortho</i>Metalation: Complementary Borylation of Aromatics and Heteroaromatics
  作者：Timothy E. Hurst、Todd K. Macklin、Maike Becker、Eduard Hartmann、Wolfgang Kügel、Jean-Christophe Parisienne-La Salle、Andrei S. Batsanov、Todd B. Marder、Victor Snieckus

  DOI：10.1002/chem.201000401

  日期：2010.7.19

  Systematic studies are presented demonstrating the complementarity of directed ortho metalation (DoM) and Ir‐catalyzed strategies for the provision of borylated aromatics and their subsequent Suzuki–Miyaura coupling reactions. A new concept, the use of the TMS group, readily introduced by DoM, as a latent regiodirective moiety to overcome the otherwise problematic production of isomeric borylated product

  进行了系统研究，证明了定向邻位金属化（D o M）和Ir催化策略的互补性，这些策略提供了硼化芳族化合物及其随后的Suzuki-Miyaura偶联反应。提出了一种新的概念，即由D o M容易引入的TMS基团作为潜在的区域定向基团，以克服异构化的硼酸酯化产物混合物的否则成问题的生产。附加电子试剂诱导的本位-deborylation和d ö的BPIN产品的M个反应说明。
• Carbanionic Friedel−Crafts Equivalents. Regioselective Directed <i>Ortho</i> and Remote Metalation−C−N Cross Coupling Routes to Acridones and Dibenzo[<i>b</i>,<i>f</i>]azepinones
  作者：Stephen L. MacNeil、Matthew Gray、Dmitry G. Gusev、Laura E. Briggs、Victor Snieckus

  DOI：10.1021/jo801856n

  日期：2008.12.19

  respectively, in good to excellent yields with regioselectivity which depends upon the presence or absence of directed metalation groups (DMGs). Brief investigations as follows are described: the synthesis of desmethyl acridone 15 (Scheme 4), an attempt to effect a double-directed remote metalation sequence which leads only to a monocyclization product 13 (Scheme 3), and an analogous but nonregioselective

  描述了通过碳负离子介导的对cri啶酮4（表2）和二苯并[b，f]氮杂环庚酮20（表4）的一般区域选择性途径。邻卤代苯甲酰胺1与苯胺2或16的Buchwald-Hartwig CN交叉偶联，然后简单的N-甲基化，可靠地提供了N-甲基二芳基胺3（表1）和18（表3）。用LDA处理后，3和18分别以良好或优异的产率转化为a烯4和二苯并[b，f]氮杂环庚酮20，其区域选择性取决于存在或不存在定向金属化基团（DMG）。描述了以下简要研究：合成去甲基a啶酮15（方案4），尝试实现双向远程金属化序列（仅导致单环化产物13）（方案3）以及类似但非区域选择性的途径黄酮22和二苯并[b，f]氧哌啶酮24（方案5）。DFT计算显示出化合物18b和23的低能构象，这说明了产物的形成，并表明环化反应处于动力学控制之下。
• Complex induced proximity effect enhancement in α-silyl carbanion generation. A general conversion of 2-silyl benzamides into 2-fluorosilylacetophenones
  作者：Paul A. Brough、Stephen Fisher、Baoping Zhao、Ryan C. Thomas、Victor Snieckus

  DOI：10.1016/0040-4039(96)00446-7

  日期：1996.4

  LDA treatment of 2-silylated benzamides 1 affords 2-fluorosilylated acetophenones 3 in a general process likely driven by CIPE-facilitated α-silyl carbanion formation and rearrangement (Scheme 3); oxidation (H2O2) of the products gives 2-hydroxyacetophenones and catechols (Scheme 4).

  LDA处理2-甲硅烷基化的苯甲酰胺1在一般过程中可能由CIPE促进的α-甲硅烷基碳负离子的形成和重排驱动生成2-氟甲硅烷基化的苯乙酮3 （方案3）；产物的氧化（H 2 O 2）得到2-羟基苯乙酮和儿茶酚（方案4）。