N-(4-acetamidobenzyl)acetamide | 20732-19-8

• 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-(4-acetamidobenzyl)acetamide
• 英文别名: p-acetamidobenzylacetamide；N,N'-Diacetyl-p-aminobenzylamin；N-[(4-acetamidophenyl)methyl]acetamide
• CAS: 20732-19-8
• 化学式: C₁₁H₁₄N₂O₂
• 分子量: 206.244
• InChiKey: ZWICEKOJPNHXNB-UHFFFAOYSA-N

物化性质

• 沸点：
  511.8±43.0 °C(Predicted)
• 密度：
  1.160±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.4
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  58.2
• 氢给体数：
  2
• 氢受体数：
  2

安全信息

• 海关编码：
  2924299090

反应信息

• 作为产物：
  描述：

  4-aminobenzylamine dihydrochloride 在 sodium hydroxide 作用下， 以 水 为溶剂， 生成 N-(4-acetamidobenzyl)acetamide
  参考文献：
  名称：

  pH optimization of nucleophilic reactions in water

  摘要：

  We present a way of prescribing the pH for a reaction so as to obtain either (a) maximum yield in competition with hydrolysis or (b) selective reaction at either of two sites in such nucleophile-electrophile reactions as C-alkylation of acidic ketones and the acylation and sulfonylation of amines. First, we derive the following general equation for pH(max), the pH giving the highest yield of the product (P) of the reaction of a nucleophile (Nu) with a hydrolyzable electrophile (E) in water: pH(max) = 1/2[log (k(w)/k(OH)) + pK(w) + pK(a)] (k(w) and k(OH) refer to the water- and hydroxide-promoted hydrolyses of E, K(w) is the autoprotolysis constant of water, and K(a) is the acid dissociation constant of NuH+, the conjugate acid of Nu). pH(max) thus depends on a property of E (namely, k(w)/k(OH)) and a property of Nu (the pK(a) of NuH+), but not on the rate constant for the reaction of E with Nu or the concentration of Nu. We then deduce analogous approximate equations for maximum selectivity for reaction at either of two nucleophilic sites, specifically, equations giving pH(xmax) and pH(ymax), the pH values for the maximum yields of the respective products (P(x) and P(y)) of the reactions of E with the two nucleophiles. We find that (a) pH-yield profiles calculated from the equations concur with observed yields for reactions under pseudo-first-order conditions and (b) preparative experiments at the estimated pH values give good to excellent yields of clean products and high selectivity in both the C-alkylation and Schotten-Baumann reactions.

  DOI：

  10.1021/ja00034a040

文献信息

• Sulfonylation-Induced <i>N</i>- to <i>O</i>-Acetyl Migration in 2-Acetamidoethanol Derivatives
  作者：Takao Yamaguchi、Dusan Hesek、Mijoon Lee、Allen G. Oliver、Shahriar Mobashery

  DOI：10.1021/jo100456z

  日期：2010.5.21

  example of sulfonylation-induced N- to O-acetyl migration of 2-acetamidoethanol derivatives is described. This type of reaction could happen with any 2-acetamidoethanol derivatives under typical sulfonylation conditions (TsCl or MsCl, pyridine) and might be a common side reaction of significance. Furthermore, the results reveal that 2-acetamidoethanol derivatives with a sterically encumbered hydroxyl

  描述了磺酰化诱导的N - 到O - 乙酰基迁移的 2-乙酰氨基乙醇衍生物的第一个例子。在典型的磺酰化条件（TsCl 或 MsCl、吡啶）下，任何 2-乙酰氨基乙醇衍生物都可能发生这种类型的反应，并且可能是一种常见的重要副反应。此外，结果表明，具有空间位阻羟基的 2-乙酰氨基乙醇衍生物可产生高产率的迁移产物。讨论了迁移反应的机理。
• LIQUID CRYSTAL DISPLAY ELEMENT
  申请人：JNC Corporation

  公开号：EP3125033A1

  公开（公告）日：2017-02-01

  Subject The subject is to provide liquid crystal display device that has characteristics such as a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio, a long service life and a small flicker rate. Means for solution The invention relates to a liquid crystal display device including an electrode group formed on one or both of a pair of substrates that are opposed to each other, and a plurality of active devices connected to the electrode group, and a liquid crystal alignment film formed on the opposing surfaces of the pair of substrates, and a liquid crystal composition sandwiched in between the pair of substrates.

  主题 本课题旨在提供具有响应时间短、电压保持比大、阈值电压低、对比度大、使用寿命长和闪烁率小等特性的液晶显示装置。 解决方法 本发明涉及一种液晶显示装置，包括在一对相对的基板中的一个或两个上形成的电极组，以及连接到电极组的多个有源器件，和在这对基板的相对表面上形成的液晶配向膜，以及夹在这对基板之间的液晶成分。
• Liquid crystal display device
  申请人：JNC CORPORATION

  公开号：US10175538B2

  公开（公告）日：2019-01-08

  The subject is to shown a liquid crystal display device that has characteristics such as a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio, a long service life and a small flicker rate. The disclosure relates to a liquid crystal display device having an electrode group formed on one or both of a pair of substrates that are opposed to each other, and a plurality of active devices connected to the electrode group, and a liquid crystal alignment film formed on the opposing surfaces of the pair of substrates, and a liquid crystal composition sandwiched in between the pair of substrates, wherein the liquid crystal alignment film includes a polymer having a photodegradable group, and the liquid crystal composition includes at least one compound selected from the group consisting of compounds represented by formula (1) as a first component:

  本发明的目的是显示一种液晶显示装置，该装置具有响应时间短、电压保持比大、阈值电压低、对比度大、使用寿命长和闪烁率小等特点。本公开涉及一种液晶显示装置，该装置具有电极组，该电极组形成在一对相互对置的基板中的一个或两个上，以及与电极组连接的多个有源器件；液晶配向膜，该液晶配向膜形成在该对基板的对置表面上；液晶组合物，该液晶组合物夹在该对基板之间，其中，液晶配向膜包括具有光降解基团的聚合物，液晶组合物包括至少一种选自由式（1）表示的化合物组成的组中的化合物作为第一组分：
• LIQUID CRYSTAL DISPLAY DEVICE
  申请人：JNC Corporation

  公开号：EP3125033B1

  公开（公告）日：2021-06-02
• Non-Invasive Molecular Imaging of Cellular Histone Deacetylase Substrate Using Magnetic Resonance Spectroscopy (MRS) or Positron Emission Tomography (PET)
  申请人：Ronen Sabrina

  公开号：US20100278730A1

  公开（公告）日：2010-11-04

  We disclose methods of detecting histone deacetylase activity in a mammal by administering to the mammal a compound comprising at least one atom having a nucleus detectable by magnetic resonance spectroscopy, wherein the compound is a substrate of histone deacetylase; and observing the compound or a cleavage product thereof in at least a portion of the body of the mammal by magnetic resonance spectroscopy (MRS). We also disclose methods of detecting histone deacetylase activity in a mammal by administering to the mammal a compound comprising at least one positron-emission-decaying radioisotope, wherein the compound is a substrate of histone deacetylase; and observing the compound or a cleavage product thereof in at least a portion of the body of the mammal by positron emission tomography (PET). We also disclose compounds useful as histone deacetylase substrates.