3-acetoxy-3-methylbutanoic acid | 44983-17-7

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: 3-acetoxy-3-methylbutanoic acid
• 英文别名: ss-Acetoxyisovaleriansaure；3-acetyloxy-3-methylbutanoic acid
• CAS: 44983-17-7
• 化学式: C₇H₁₂O₄
• 分子量: 160.17
• InChiKey: LFJRRVBIFJBMJO-UHFFFAOYSA-N

物化性质

• 沸点：
  254.6±23.0 °C(Predicted)
• 密度：
  1.126±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.2
• 重原子数：
  11
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.71
• 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：

  3-acetoxy-3-methylbutanoic acid 在 sodium hydroxide 作用下， 以 甲醇 为溶剂， 生成 β-羟基异戊酸
  参考文献：
  名称：

  金（I）/铜（II）-共催化串联环化/ Semipinacol反应：6-Aza / Oxa-Spiro [4.5]癸烷骨架的构建和（±）-盐酸的形式合成

  摘要：

  提出了一种在金（I）/铜（II）的共催化下构建6-氮杂/氧杂-螺[4.5]癸烷骨架的简单有效策略，并且通过生物学上的正式合成证明了其潜在的实用性。活性海洋生物碱（±）-氯化氢。

  DOI：

  10.1002/adsc.201400932
• 作为产物：
  描述：

  异戊二醇 在 对甲苯磺酸 作用下， 生成 3-acetoxy-3-methylbutanoic acid
  参考文献：
  名称：

  金（I）/铜（II）-共催化串联环化/ Semipinacol反应：6-Aza / Oxa-Spiro [4.5]癸烷骨架的构建和（±）-盐酸的形式合成

  摘要：

  提出了一种在金（I）/铜（II）的共催化下构建6-氮杂/氧杂-螺[4.5]癸烷骨架的简单有效策略，并且通过生物学上的正式合成证明了其潜在的实用性。活性海洋生物碱（±）-氯化氢。

  DOI：

  10.1002/adsc.201400932

文献信息

• Reactions of hydrogen peroxide with acetylacetone and 2-acetylcyclopentanone
  作者：V. L. Novikov、O. P. Shestak

  DOI：10.1007/s11172-013-0316-6

  日期：2013.10

  A reaction of acetylacetone with equimolar amount of concentrated aqueous H2O2 in both organic solvents (ButOH, AcOH) and water at various temperatures gave the corresponding 3,5-dihydroxy-1,2-dioxolanes with different configuration of stereogenic centers. In the presence of an excess of H2O2, 3,5-dihydroxy-1,2-dioxolanes were converted to a mixture of 5-hydroperoxy-3-hydroxy-1,2-dioxolanes and further to a mixture of dimeric 1,2-dioxolan-3-ylperoxides. All the peroxides formed exist in solutions as equilibrium mixtures with the starting reagents. A prolonged reflux of solutions of 3,5-dihydroxy-1,2-dioxolanes in ButOH in the presence of a large excess of H2O2 led to the skeletal rearrangements of the substrates to a mixture of propionic acid and hydroxyacetone, which underwent further oxidative transformations. Unlike acetylacetone, 2-acetylcyclopentanone reacted with H2O2 in aqueous phase or in solutions in ButOH under thermodynamic or kinetic control with the formation of the corresponding 5-hydroperoxy-3-hydroxy-1,2-dioxolanes, rather than 3,5-dihydroxy-1,2-dioxolanes. Thermodynamically controlled process in solution in AcOH gave a mixture of all four possible hydroperoxyhydroxy-1,2-dioxolanes. These cyclic peroxides in solutions in ButOH or AcOH readily converted to a mixture of AcOH, glutaric, α-methyladipic, and α-hydroxy-α-methyladipic acids. An active α-hydroxylation of the substrate was observed upon reflux of a solution of 2-acetylcyclopentanone and H2O2 in AcOH.

  在不同温度下，乙酰丙酮与等摩尔量的浓过氧化氢水溶液在有机溶剂（丁醇、乙酸）和水中的反应，生成了相应的3,5-二羟基-1,2-二氧杂环戊烷，具有不同的立体中心构型。在过氧化氢过量的情况下，3,5-二羟基-1,2-二氧杂环戊烷转化为5-羟过氧基-3-羟基-1,2-二氧杂环戊烷的混合物，进而转化为二聚1,2-二氧杂环戊烷-3-基过氧化物的混合物。所有形成的过氧化物在溶液中以起始试剂的平衡混合物形式存在。在丁醇中3,5-二羟基-1,2-二氧杂环戊烷溶液长时间回流，并在大量过氧化氢存在下，底物发生骨架重排，生成丙酸和羟基丙酮的混合物，进一步经历氧化转化。与乙酰丙酮不同，2-乙酰基环戊酮在水相或丁醇溶液中与过氧化氢反应，在热力学或动力学控制下形成相应的5-羟过氧基-3-羟基-1,2-二氧杂环戊烷，而不是3,5-二羟基-1,2-二氧杂环戊烷。在乙酸溶液中受热力学控制的反应过程生成所有四种可能的羟过氧基羟基-1,2-二氧杂环戊烷的混合物。这些环状过氧化物在丁醇或乙酸溶液中容易转化为乙酸、戊二酸、α-甲基己二酸和α-羟基-α-甲基己二酸的混合物。在乙酸中2-乙酰基环戊酮与过氧化氢溶液回流时，观察到底物的α-羟基化反应活性。
• Catalyst comprising a cyclic imide compound and process for producing organic compounds using the catalyst
  申请人：——

  公开号：US20020128149A1

  公开（公告）日：2002-09-12

  A catalyst includes a cyclic imide compound having an N-substituted cyclic imide skeleton represented by following Formula (I): 1 wherein X is an oxygen atom or a hydroxyl group, and having a solubility parameter of less than or equal to 26 [(MPa) ½ ] as determined by Fedors method. The catalyst may further comprise a metallic compound. By allowing (A) a compound capable of forming a radical to react with (B) a radical scavenging compound in the presence of the catalyst, an addition or substitution reaction product between the compound (A) and the compound (B) or a derivative thereof can be obtained.

  催化剂包括具有由下式（I）表示的N-取代的环状亚酰亚胺骨架的环状亚酰亚胺化合物，其中X是氧原子或羟基，并且具有由Fedors方法确定的溶解度参数小于或等于26 [（MPa）½]。该催化剂还可以包括金属化合物。通过允许（A）能够形成自由基的化合物与（B）自由基清除化合物在催化剂存在的情况下发生反应，可以获得化合物（A）和化合物（B）之间的加成或取代反应产物或其衍生物。
• Catalyst comprising n-substituted cylic imides and processes for preparing organic compounds with the catalyst
  申请人：——

  公开号：US20030013603A1

  公开（公告）日：2003-01-16

  A catalyst of the invention includes an imide compound having a N-substituted cyclic imide skeleton represented by following Formula (I): 1 wherein R is a hydroxyl-protecting group. Preferred R is a hydrolyzable protecting group. R may be a group obtained from an acid by eliminating an OH group therefrom. Such acids include, for example, carboxylic acids, sulfonic acids, carbonic acid, carbamic acid, sulfuric acid, nitric acid, phosphoric acids and boric acids. The catalyst may include the imide compound and a metallic compound in combination. In the presence of the catalyst, (A) a compound capable of forming a radical is allowed to react with (B) a radical scavenging compound and thereby yields an addition or substitution reaction product of the compound (A) and the compound (B) or a derivative thereof. This catalyst can produce an organic compound with a high selectivity in a high yield as a result of, for example, an addition or substitution reaction under mild conditions.

  该发明的催化剂包括具有以下式（I）所表示的N-取代环状亚酰胺骨架的亚酰胺化合物：其中R是羟基保护基。首选R是可水解的保护基。R可以是从酸中消除OH基团得到的基团。这些酸包括例如羧酸，磺酸，碳酸，氨基甲酸，硫酸，硝酸，磷酸和硼酸。催化剂可以包括亚酰胺化合物和金属化合物的组合。在催化剂的存在下，将能够形成自由基的化合物（A）与自由基清除化合物（B）反应，从而生成化合物（A）和化合物（B）或其衍生物的加成或取代反应产物。该催化剂可以在温和条件下通过加成或取代反应以高选择性高产率地产生有机化合物。
• Catalyst comprising cyclic acylurea compounds and processes for production organic compounds with the same
  申请人：Ishii Yasutaka

  公开号：US20050020439A1

  公开（公告）日：2005-01-27

  A catalyst of the invention includes a cyclic acylurea compound having a cyclic acylurea skeleton represented by following Formula (I): wherein R is a hydrogen atom or a hydroxyl-protecting group; n is 1 or 2; G is a carbon atom or a nitrogen atom, where two Gs are the same or different when n is 2. The catalyst may include the cyclic acylurea compound and a metallic compound in combination. In the presence of the catalyst, (A) a compound capable of forming a radical is allowed to react with (B) a radical scavenging compound and thereby yields an addition or substitution reaction product of the compound (A) and the compound (B) or a derivative thereof. This catalyst can produce an organic compound with a high selectivity in a high yield as a result of, for example, an addition or substitution reaction under mild conditions.

  该发明的催化剂包括具有下式表示的环状酰脲骨架的环状酰脲化合物（I）：其中R是氢原子或羟基保护基；n为1或2；G是碳原子或氮原子，当n为2时，两个G可以相同或不同。该催化剂可以包括环状酰脲化合物和金属化合物的组合物。在催化剂的存在下，（A）能够形成自由基的化合物与（B）自由基清除化合物反应，从而产生化合物（A）和化合物（B）或其衍生物的加成或取代反应产物。该催化剂可以在温和条件下通过加成或取代反应产生高选择性和高产率的有机化合物。
• Catalyst comprising cyclic acylurea compound and process for producing organic compounds using the catalyst
  申请人：Ishii Yasutaka

  公开号：US20060030716A1

  公开（公告）日：2006-02-09

  A catalyst of the invention includes a cyclic acylurea compound having a cyclic acylurea skeleton represented by following Formula (I): wherein R is a hydrogen atom or a hydroxyl-protecting group; n is 1 or 2; G is a carbon atom or a nitrogen atom, where two Gs are the same or different when n is 2. The catalyst may include the cyclic acylurea compound and a metallic compound in combination. In the presence of the catalyst, (A) a compound capable of forming a radical is allowed to react with (B) a radical scavenging compound and thereby yields an addition or substitution reaction product of the compound (A) and the compound (B) or a derivative thereof. This catalyst can produce an organic compound with a high selectivity in a high yield as a result of, for example, an addition or substitution reaction under mild conditions.

  本发明的催化剂包括具有以下式（I）所表示的环状酰基脲骨架的环状酰基脲化合物，其中R是氢原子或羟基保护基；n为1或2；G为碳原子或氮原子，当n为2时，两个G可以相同或不同。该催化剂可以包括环状酰基脲化合物和金属化合物的组合。在催化剂的存在下，将（A）能够形成自由基的化合物与（B）自由基清除化合物反应，从而产生化合物（A）和化合物（B）或其衍生物的加成或取代反应产物。该催化剂可以在温和的条件下通过加成或取代反应产生高选择性的有机化合物，从而获得高收率。