3-benzoyloxy-2,2-dimethyl-5-γ-butyrolactone | 591209-09-5

• 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: 3-benzoyloxy-2,2-dimethyl-5-γ-butyrolactone
• 英文别名: 4-benzoyloxy-5,5-dimethyl-2(3H)-dihydrofuranone；2(3H)-Furanone, 4-(benzoyloxy)dihydro-5,5-dimethyl-；(2,2-dimethyl-5-oxooxolan-3-yl) benzoate
• CAS: 591209-09-5
• 化学式: C₁₃H₁₄O₄
• 分子量: 234.252
• InChiKey: AEWCGKAMUJPPJZ-UHFFFAOYSA-N

物化性质

• 熔点：
  89 °C
• 沸点：
  140 °C(Press: 8e-3 Torr)
• 密度：
  1.20±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  17
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  2,5-trans-2-(1-hydroxy-1-methylethyl)-5-phenyltetrahydrofuran 在 叔丁基过氧化氢 、 [VO(N-salicylidene 2-aminophenolate)(OEt)]EtOH 作用下， 以 正壬烷 、 氯仿 为溶剂， 反应 72.0h， 以28%的产率得到3-benzoyloxy-2,2-dimethyl-5-γ-butyrolactone
  参考文献：
  名称：

  Formation of 3-acyloxy-γ-butyrolactones from 4-pentenols in vanadium-catalyzed oxidations

  摘要：

  O-Acyl derivatives of 3-hydroxy-gamma-butyrolactone are formed in up to 20% yield as by-products from 1-alkyl- and 1-phenyl-substituted 4-pentenols and tert-butyl hydroperoxide (TBHP) in vanadium-catalyzed synthesis of (tetrahydrofuran-2-yl)-methanols. The lactones are secondary products formed from (tetrahydrofuran-2-yl)-methanols via hydrogen atom abstraction in positions 4 and 5, as derived from experiments starting from deuterium-labeled alkenols. Stereocenters at tetrahydrofuran carbon 2 and the proximate hydroxyl carbon of the alkanol side chain retain configuration in the course of oxidative tetrahydrofuran conversion. In an atmosphere of nitrogen or argon, no gamma-butyrolactone formation occurs, pointing to dioxygen as terminal oxidant for the secondary oxidation. Adding cyclohexa-1,4-diene or gamma-terpinene to a solution of a 4-pentenol, TBHP, and a vanadium catalyst exposed to air inhibits formation of gamma-butyrolactones. A third approach to prevent gamma-butyrolactones from being formed in oxidative 4-pentenol cyclization uses cis-2,6-bis-(methanol)-piperidine instead of N-salicylidene-ortho-aminophenol as tridentate auxiliary for the vanadium catalyst. (C) 2014 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2014.05.011

文献信息

• (Schiff-base)vanadium(V) Complex-Catalyzed Oxidations of Substituted Bis(homoallylic) Alcohols − Stereoselective Synthesis of Functionalized Tetrahydrofurans
  作者：Jens Hartung、Simone Drees、Marco Greb、Philipp Schmidt、Ingrid Svoboda、Hartmut Fuess、Alexander Murso、Dietmar Stalke

  DOI：10.1002/ejoc.200200644

  日期：2003.7

  Vanadium(V) complexes 4 have been prepared from tridentate Schiff-base ligands 3 and VO(OEt)3. All vanadium(V) compounds were characterized (IR, UV/Vis, and 51V NMR spectroscopy, and in selected examples by X-ray diffraction analysis) and were applied as oxidation catalysts for the stereoselective synthesis of functionalized tetrahydrofurans 2 starting from substituted bis(homoallylic) alcohols 1 (mono-

  钒 (V) 配合物 4 已由三齿席夫碱配体 3 和 VO(OEt)3 制备。对所有钒 (V) 化合物进行了表征（IR、UV/Vis 和 51V NMR 光谱，在选定的实施例中通过 X 射线衍射分析）并用作氧化催化剂，用于从取代的双 ( homoallylic) 醇 1（单或三取代的 C-C 双键）。在优化条件下氧化仲或叔 1-烷基-、1-乙烯基-或 1-苯基取代的 5,5-二甲基-4-戊烯-1-醇 [TBHP 作为主要氧化剂和 1,2-(氨基)茚满醇衍生的钒（V）试剂 4g 作为催化剂]以合成有用的产率和非对映选择性（22-96% de）提供了 2,5-顺式配置的四氢呋喃。另一方面，从 2- 或 3- 烷基-和 2- 或 3-苯基-取代的 5,5-二甲基-4-戊烯-1-醇双（高烯丙）醇的氧化获得反式二取代的氧杂环戊烷 (62%−96 de) . 用 TBHP 和催化量的钒 (V) 配合物 4g
• cis-2,6-Bis-(methanolate)-piperidine oxovanadium(V) complexes as catalysts for oxidative alkenol cyclization by tert-butyl hydroperoxide
  作者：Maike Dönges、Matthias Amberg、Georg Stapf、Harald Kelm、Uwe Bergsträßer、Jens Hartung

  DOI：10.1016/j.ica.2014.02.007

  日期：2014.8

  cis-2,6-Bis-(methanolate)-piperidine oxovanadium(V) complexes are Lewis acids able to catalyze oxidative cyclization of alkenols by tert-butyl hydroperoxide (TBHP). Terminal dimethyl-substituted (prenyl-type) 4-pentenols bearing an alkyl or a phenyl group in position 1 afford under such conditions 2,5-cis-derivatives of 2-(tetrahydrofuran-2-yl)-2-propanol as major and tetrahydropyran-3-ols as minor products (four examples). Oxidizing 1-phenyl-6-methylhept-5-en-l-ol yields a 75125-mixture of the derived 2-(tetrahydropyran-2-yl)-2-propanol and an oxepan-3-ol, whereas 2-propenols give epoxides in up to 94% yield. Epoxidizing geraniol by TBHP in the presence of a vanadium catalyst prepared from (2,5,6R)-2-diphenylmethanol-6-hydroxymethylpiperidine occurs enantioselectively. Highfield shifts of vanadium-51 resonances upon adding alkyl hydroperoxides to solutions of cis-2,6-bis-(methanolate)-piperidine vanadium(V) complexes point to vanadium(V) tert-butyl peroxy complex formation as key step for activating peroxides. (C) 2014 Elsevier B.V. All rights reserved.
• Formation of 3-acyloxy-γ-butyrolactones from 4-pentenols in vanadium-catalyzed oxidations
  作者：Matthias Amberg、Maike Dönges、Georg Stapf、Jens Hartung

  DOI：10.1016/j.tet.2014.05.011

  日期：2014.8

  O-Acyl derivatives of 3-hydroxy-gamma-butyrolactone are formed in up to 20% yield as by-products from 1-alkyl- and 1-phenyl-substituted 4-pentenols and tert-butyl hydroperoxide (TBHP) in vanadium-catalyzed synthesis of (tetrahydrofuran-2-yl)-methanols. The lactones are secondary products formed from (tetrahydrofuran-2-yl)-methanols via hydrogen atom abstraction in positions 4 and 5, as derived from experiments starting from deuterium-labeled alkenols. Stereocenters at tetrahydrofuran carbon 2 and the proximate hydroxyl carbon of the alkanol side chain retain configuration in the course of oxidative tetrahydrofuran conversion. In an atmosphere of nitrogen or argon, no gamma-butyrolactone formation occurs, pointing to dioxygen as terminal oxidant for the secondary oxidation. Adding cyclohexa-1,4-diene or gamma-terpinene to a solution of a 4-pentenol, TBHP, and a vanadium catalyst exposed to air inhibits formation of gamma-butyrolactones. A third approach to prevent gamma-butyrolactones from being formed in oxidative 4-pentenol cyclization uses cis-2,6-bis-(methanol)-piperidine instead of N-salicylidene-ortho-aminophenol as tridentate auxiliary for the vanadium catalyst. (C) 2014 Elsevier Ltd. All rights reserved.