(S)-6-Heptyl-5,6-dihydro-pyran-2-one | 152398-50-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃
• 英文名称: (S)-6-Heptyl-5,6-dihydro-pyran-2-one
• 英文别名: (2S)-2-heptyl-2,3-dihydropyran-6-one
• CAS: 152398-50-0
• 化学式: C₁₂H₂₀O₂
• 分子量: 196.29
• InChiKey: XPTXKXKPWKNYKB-NSHDSACASA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  14
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (S)-6-Heptyl-5,6-dihydro-pyran-2-one 在 palladium on activated charcoal 氢气 作用下， 以 乙酸乙酯 为溶剂， 以91%的产率得到(S)-δ-dodecalactone
  参考文献：
  名称：

  Enzyme assisted synthesis of enantiomerically pure δ-lactones

  摘要：

  Both enantiomeric series of a wide variety of optically pure 6-alkylated delta-lactones - saturated as well as unsaturated - were prepared via an enzyme mediated route. The key reaction step is the nucleophilic ring opening of enantiomerically pure alkyl-oxiranes, accessible via the corresponding beta-hydroxythioethers which can be obtained enantiomerically pure via enzyme catalyzed kinetic resolutions.

  DOI：

  10.1016/s0957-4166(00)80146-9
• 作为产物：
  描述：

  1,2-环氧庚烷 在 Lindlar's catalyst 吡啶 、 喹啉 、 4-二甲氨基吡啶 、 sodium hydroxide 、 正丁基锂 、 三氟化硼乙醚 、 水 、 氢气 、 trimethoxonium tetrafluoroborate 、 sodium hydride 、 potassium carbonate 、 对甲苯磺酸 作用下， 以 甲醇 、 二氯甲烷 、 乙酸乙酯 、 甲苯 为溶剂， -78.0~25.0 ℃ 、101.33 kPa 条件下， 反应 27.25h， 生成 (S)-6-Heptyl-5,6-dihydro-pyran-2-one
  参考文献：
  名称：

  Enzyme assisted synthesis of enantiomerically pure δ-lactones

  摘要：

  Both enantiomeric series of a wide variety of optically pure 6-alkylated delta-lactones - saturated as well as unsaturated - were prepared via an enzyme mediated route. The key reaction step is the nucleophilic ring opening of enantiomerically pure alkyl-oxiranes, accessible via the corresponding beta-hydroxythioethers which can be obtained enantiomerically pure via enzyme catalyzed kinetic resolutions.

  DOI：

  10.1016/s0957-4166(00)80146-9

文献信息

• Asymmetric Synthesis of α,β-Unsaturated δ-Lactones through Copper(I)-Catalyzed Direct Vinylogous Aldol Reaction
  作者：Hai-Jun Zhang、Liang Yin

  DOI：10.1021/jacs.8b07929

  日期：2018.9.26

  for the asymmetric synthesis of chiral α,β-unsaturated δ-lactones was achieved by copper(I)-catalyzed direct vinylogous aldol reaction (DVAR) of β,γ-unsaturated esters and various aldehydes, including aromatic aldehydes, heteroaromatic aldehydes, α,β-unsaturated aldehydes, and aliphatic aldehydes. For aromatic and heteroaromatic aldehydes, a one-pot reaction consisting of DVAR, isomerization of the

  通过铜（I）催化的 β,γ-不饱和酯和各种醛（包括芳香醛、杂芳香醛）的直接乙烯基醛醇反应 (DVAR)，实现了一种不对称合成手性 α,β-不饱和 δ-内酯的简单方法、α,β-不饱和醛和脂肪醛。对于芳香醛和杂芳香醛，需要由 DVAR、不饱和碳-碳双键从 (E)-形式异构化为 (Z)-形式以及随后的分子内酯交换组成的一锅反应，以获得中等至高产率和高对映选择性。对于 α,β-不饱和醛和脂肪族醛，DVAR 直接以中等收率和高对映选择性提供内酯。在 DVAR 中，各种功能组都具有良好的耐受性。而且，该方法很好地适用于分布在天然产物、天然产物衍生物和药物分子衍生物（托莫西汀和萘普生）中的醛基。机理研究表明，α-加成是可逆的且不受青睐，这说明了 DVAR 具有出色的区域选择性。提出通过去质子化产生的铜 (I)-二烯醇化物物质与烯丙基铜 (I) 物质形成平衡，烯丙基铜 (I) 物质与醛反应通过醛的催化不对称烯丙基化提供
• First total synthesis of achaetolide
  作者：S. Chandrasekhar、S.V. Balaji、G. Rajesh

  DOI：10.1016/j.tetlet.2010.07.127

  日期：2010.9

  The first total synthesis of achaetolide, a 10-membered macrolactone was achieved using Mitsunobu reaction and Grubbs ring-closing metathesis reaction as the key steps for ring construction. The desired stereo centres were generated by Jacobsen hydrolytic kinetic resolution, dihydroxylation and Sharpless asymmetric epoxidation reactions. (c) 2010 Elsevier Ltd. All rights reserved.
• Enzyme assisted synthesis of enantiomerically pure δ-lactones
  作者：Bernhard Haase、Manfred P. Schneider

  DOI：10.1016/s0957-4166(00)80146-9

  日期：1993.5

  Both enantiomeric series of a wide variety of optically pure 6-alkylated delta-lactones - saturated as well as unsaturated - were prepared via an enzyme mediated route. The key reaction step is the nucleophilic ring opening of enantiomerically pure alkyl-oxiranes, accessible via the corresponding beta-hydroxythioethers which can be obtained enantiomerically pure via enzyme catalyzed kinetic resolutions.