2-(乙酰氧基甲基)-2-甲基丁酸 | 656241-04-2

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 中文名称: 2-(乙酰氧基甲基)-2-甲基丁酸
• 英文名称: 2-acetoxymethyl-2-methylbutyric acid
• 英文别名: 2-[(Acetyloxy)methyl]-2-methylbutanoic acid；2-(acetyloxymethyl)-2-methylbutanoic acid
• CAS: 656241-04-2
• 化学式: C₈H₁₄O₄
• 分子量: 174.197
• InChiKey: AIKMTPZGZJJHPW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.9
• 重原子数：
  12
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  63.6
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  2-(乙酰氧基甲基)-2-甲基丁酸 在 盐酸 、 氢溴酸 、 三乙胺 作用下， 以 四氢呋喃 为溶剂， 反应 31.0h， 生成 2-甲基-2-(硫烷基甲基)丁酸
  参考文献：
  名称：

  Synthesis and evaluation of α,α-disubstituted-3-mercaptopropanoic acids as inhibitors for carboxypeptidase A and implications with respect to enzyme inhibitor design

  摘要：

  2-Ethyl-2-meth% 1-3-mercaptopropanoic acid (6) and 2-benzyl-2-methyl-3-mercaptopropanoic acid (7) were synthesized and evaluated as inhibitors for carboxypeptidase A (CPA), a prototypical zinc protease with the expectation that the binding affinities of these inhibitors would be augmented over those of 2-ethyl-3-methylsuccinic acid (2) and 2-benzyl-3-methylsuccinic acid (3), respectively, in light of the fact that the sulfhydryl group is a better zinc coordinating moiety than the carboxylate group. Contrary to the expectation. however. the inhibitory potency of 6 was not improved and that of 7 was rather attenuated by the replacement. A probable explanation for the unexpected results is offered. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2003.08.017
• 作为产物：
  描述：

  2-乙基-2-甲基-1,3-丙二醇 在 jones reagent 、 对甲苯磺酸 作用下， 以 二氯甲烷 、 丙酮 为溶剂， 反应 1.0h， 生成 2-(乙酰氧基甲基)-2-甲基丁酸
  参考文献：
  名称：

  Synthesis and evaluation of α,α-disubstituted-3-mercaptopropanoic acids as inhibitors for carboxypeptidase A and implications with respect to enzyme inhibitor design

  摘要：

  2-Ethyl-2-meth% 1-3-mercaptopropanoic acid (6) and 2-benzyl-2-methyl-3-mercaptopropanoic acid (7) were synthesized and evaluated as inhibitors for carboxypeptidase A (CPA), a prototypical zinc protease with the expectation that the binding affinities of these inhibitors would be augmented over those of 2-ethyl-3-methylsuccinic acid (2) and 2-benzyl-3-methylsuccinic acid (3), respectively, in light of the fact that the sulfhydryl group is a better zinc coordinating moiety than the carboxylate group. Contrary to the expectation. however. the inhibitory potency of 6 was not improved and that of 7 was rather attenuated by the replacement. A probable explanation for the unexpected results is offered. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2003.08.017

文献信息

• Ligand-Enabled Monoselective β-C(sp³)–H Acyloxylation of Free Carboxylic Acids Using a Practical Oxidant
  作者：Zhe Zhuang、Alastair N. Herron、Zhoulong Fan、Jin-Quan Yu

  DOI：10.1021/jacs.0c01214

  日期：2020.4.8

  recent disclosure of the β-lactonization of free aliphatic acids, the use of peroxides in C-H activation reactions directed by weakly coordinating native functional groups was unreported. Herein we report C(sp3)-H β-acetoxylation and γ-, δ-, and ε-lactonization reactions of free carboxylic acids enabled by a novel cyclopentane-based mono-N-protected β-amino acid (MPAA) ligand. Notably, tert-butyl hydrogen

  开发使用廉价且实用的氧化剂的 CH 活化反应仍然是一个重大挑战。在我们最近公开游离脂肪酸的 β-内酯化之前，过氧化物在由弱配位天然官能团指导的 CH 活化反应中的使用还没有报道。在此，我们报告了由新型环戊烷基单-N-保护的 β-氨基酸 (MPAA) 配体实现的游离羧酸的 C(sp3)-H β-乙酰氧基化和 γ-、δ- 和 ε-内酯化反应。值得注意的是，叔丁基过氧化氢 (TBHP) 被用作这些反应的唯一氧化剂。与其他 CH 活化方案相比，该反应具有几个关键优势：(1) 在存在两个 α-甲基基团的情况下观察到唯一的单选择性；(2) 含有α-氢的脂肪族羧酸与本协议兼容；
• Direct β-C(sp³)–H Acetoxylation of Aliphatic Carboxylic Acids
  作者：Kiron K. Ghosh、Alexander Uttry、Aylin Koldemir、Mike Ong、Manuel van Gemmeren

  DOI：10.1021/acs.orglett.9b02741

  日期：2019.9.6

  strong directing groups. In our studies, we found that the use of a "traceless base" was crucial for the development of a synthetically useful transformation. Furthermore, the synthetic utility of the products obtained was demonstrated by their use in subsequent transformations.

  定义的氧化模式的受控结构是合成天然产物和生物活性分子的关键方面之一。为了实现这一目标，我们在此报告了一种新的协议，用于Pd催化脂肪族羧酸的直接β-C（sp3）-H乙酰氧基化。该方案可以一步使用游离羧酸，而无需引入专门的强指导基团。在我们的研究中，我们发现“无痕碱基”的使用对于合成有用的转化至关重要。此外，通过在随后的转化中的使用证明了所获得的产物的合成效用。