(S)-methyl 2-hydroxy-2-methylpent-4-enoate | 1072451-45-6

• 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: (S)-methyl 2-hydroxy-2-methylpent-4-enoate
• 英文别名: methyl 2-hydroxy-2-methyl-4-pentenoate；methyl (2S)-2-hydroxy-2-methylpent-4-enoate
• CAS: 1072451-45-6
• 化学式: C₇H₁₂O₃
• 分子量: 144.17
• InChiKey: JZDKUMJBPCMQJF-ZETCQYMHSA-N

物化性质

• 沸点：
  184.2±20.0 °C(Predicted)
• 密度：
  1.028±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.8
• 重原子数：
  10
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (S)-methyl 2-hydroxy-2-methylpent-4-enoate 在 Grubbs catalyst first generation 、 双(三甲基硅烷基)氨基钾 作用下， 以 四氢呋喃 、 甲苯 为溶剂， 反应 36.84h， 生成 (S)-methyl 2-methyl-3,4-dihydro-2H-pyran-2-carboxylate
  参考文献：
  名称：

  Identification of an unexpected 2-oxonia[3,3]sigmatropic rearrangement/aldol pathway in the formation of oxacyclic rings. Total synthesis of (+)-aspergillin PZ

  摘要：

  This paper reports the first unambiguous evidence that the cascade synthesis of tetrahydrofuran-containing oxacyclic molecules depicted in Scheme 12 can take place by a 2-oxonia[3,3]sigmatropic/aldol mechanism rather than by a Prins cyclization/pinacol rearrangement sequence. The 8-oxabicyclo [3.2.1]octyl aldehyde products of this reaction, 20 and 29, were employed to complete the first total synthesis of the structurally remarkable isoindolone alkaloid (+)-aspergillin PZ (1). The lack of activity seen in two tumor cell lines for synthetic (+)-aspergillin PZ calls into question the suggestion that aspergillin PZ, like many aspochalasin diterpenes, might exhibit useful antitumor properties. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2011.09.079
• 作为产物：
  描述：

  (S)-1,3-dihydroxy-3-methylhex-5-en-2-one 在 potassium carbonate 、 高碘酸 作用下， 以 四氢呋喃 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 25.0h， 生成 (S)-methyl 2-hydroxy-2-methylpent-4-enoate
  参考文献：
  名称：

  对映选择性脱羧烷基化反应：催化剂开发、底物范围和机理研究

  摘要：

  在钯配合物与各种膦恶唑啉 (PHOX) 配体的存在下，通过不稳定的前手性烯醇化亲核试剂对烯丙基和炔丙基亲电子试剂进行新颖的对映选择性烷基化来获得 α-季酮。三类烯醇化物前体获得了优异的产率和高对映体过量：烯醇碳酸酯、烯醇硅烷和外消旋 β-酮酯。这些底物类别中的每一种在产率和对映选择性方面都具有几乎相同的效率。报道了催化剂的发现和开发、反应条件的优化、反应范围的探索以及在靶向合成中的应用。实验观察表明，这些烷基化反应通过一种不寻常的内球机制发生，涉及前手性烯醇化亲核试剂直接与钯中心结合。

  DOI：

  10.1002/chem.201003383

文献信息

• ENANTIOSELECTIVE SYNTHESIS OF DIALKYLATED N,O-HETEROCYCLES BY PALLADIUM-CATALYZED ALLYLIC ALKYLATION
  申请人：Stoltz Brian M.

  公开号：US20160096810A1

  公开（公告）日：2016-04-07

  This invention provides enantioenriched N,O-heterocyclic compounds with quaternary stereogenic centers and novel methods of preparing the compounds. Methods include the method for the preparation of a compound of formula (I): comprising treating a compound of formula (II): with a transition metal catalyst under alkylation conditions.

  这项发明提供了含有季碳立体中心的手性富集的N,O-杂环化合物以及制备这些化合物的新方法。方法包括制备式(I)化合物的方法：将式(II)化合物在烷基化条件下与过渡金属催化剂处理。
• Catalytic Enantioselective Alkylation of Substituted Dioxanone Enol Ethers: Ready Access to C(α)-Tetrasubstituted Hydroxyketones, Acids, and Esters
  作者：Masaki Seto、Jennifer L. Roizen、Brian M. Stoltz

  DOI：10.1002/anie.200801424

  日期：2008.8.25

  The catalytic enantioselective formation of tetrasubstituted α-alkoxycarbonyl compounds is an ongoing challenge to synthetic chemists.[1] Fully-substituted α-hydroxyesters and acids comprise essential components of, and building blocks for, many bioactive natural products. These include quinic acid (1), cytotoxic leiodolide A (2),[2] and the anti-cancer agents in the harringtonine series (3a–f), whose activities depend dramatically on the presence and composition of an α-hydroxyester side-chain.[3] While many approaches to these important moieties exist,[4,5] we envisioned applying our recently developed palladium-catalyzed methods for the formation of enantioenriched all-carbon quaternary stereocenters in cyclic alkanones[6] to a general synthesis of C(α)-tetrasubstituted hydroxy carbonyl compounds.[7]