(S)-4,7-dimethylchroman-2-one | 147877-21-2

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 3,4-二氢香豆素
• 英文名称: (S)-4,7-dimethylchroman-2-one
• 英文别名: (4S)-4,7-dimethyl-3,4-dihydrochromen-2-one
• CAS: 147877-21-2
• 化学式: C₁₁H₁₂O₂
• 分子量: 176.215
• InChiKey: CDFIHXOHLWMULT-QMMMGPOBSA-N

物化性质

• 沸点：
  256.1±35.0 °C(Predicted)
• 密度：
  1.100±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  13
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.36
• 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)-4,7-dimethylchroman-2-one 在 三乙胺 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 为溶剂， 生成 (S)-6-(2-hydroxy-4-methylphenyl)-2-methylhept-2-en-4-one
  参考文献：
  名称：

  Use of 1,1'-Binaphthalene-8,8'-diol as a Chiral Auxiliary for Asymmetric Michael Addition. Application to the Syntheses of Turmeronol A and B.

  摘要：

  二愈创木酸锂与 1，1'-联萘-8，8'-二醇的半酯进行高非对映选择性迈克尔加成反应，甲醇分解后得到对映体过量的 β-取代酯。以该反应为关键步骤，合成了具有光学活性的酚类倍半萜化合物松柏醇 A (1) 和 B(2)。

  DOI：

  10.1248/cpb.47.1053
• 作为产物：
  描述：

  (R)-2-(2-methoxy-4-methylphenyl)propan-1-ol 在 吡啶 、 三溴化硼 、 sodium hydroxide 作用下， 以 二氯甲烷 、 二甲基亚砜 为溶剂， 反应 22.0h， 生成 (S)-4,7-dimethylchroman-2-one
  参考文献：
  名称：

  Lipase-mediated resolution of substituted 2-aryl-propanols: application to the enantioselective synthesis of phenolic sesquiterpenes

  摘要：

  A comprehensive study of the lipase-mediated resolution of substituted 2-aryl-propanols is reported. The latter alcohols were submitted to the irreversible acetylation catalyzed either by PPL, CRL, or lipase PS. The enantioselectivity of these transformations was dependent on the type of lipase used. The type of substituents and particularly their position on the aromatic ring strongly affected the selectivity of the reaction. The experiments described prove that PPL is the more versatile lipase catalyzing the acetylation with an enantiomeric ratio (E) value that ranges from 1 up to 144, depending on the substrate used. Conversely, the same transformations were catalyzed by CRL and lipase PS with an enantiomeric ratio value, which is always less than 5. The remarkable behavior of PPL was exploited in the large scale resolution of some substituted 2-aryl-propanols whose enantiomeric forms are relevant building blocks in the enantioselective synthesis of phenolic sesquiterpenes. By these means, the synthesis of (S)-turmeronol B and the formal syntheses of (R)-curcumene, (R)-curcuphenol, (R)-xanthorrhizol, and (R)-curcuhydroquinone were accomplished. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2011.03.012

文献信息

• Use of 1,1'-Binaphthalene-8,8'-diol as a Chiral Auxiliary for Asymmetric Michael Addition. Application to the Syntheses of Turmeronol A and B.
  作者：Kiyoshi TANAKA、Mohammad NURUZZAMAN、Masato YOSHIDA、Naoyuki ASAKAWA、Xiao-Shen YANG、Kazunori TSUBAKI、Kaoru FUJI

  DOI：10.1248/cpb.47.1053

  日期：——

  Highly diastereoselective Michael addition of lithium diorganocuprates to the half-ester of 1, 1'-binaphthalene-8, 8'-diol gave β-substituted esters with high enantiomeric excess after methanolysis. The optically active phenolic sesquiterpenes turmeronol A (1) and B(2) have been synthesized using this reaction as a key step.

  二愈创木酸锂与 1，1'-联萘-8，8'-二醇的半酯进行高非对映选择性迈克尔加成反应，甲醇分解后得到对映体过量的 β-取代酯。以该反应为关键步骤，合成了具有光学活性的酚类倍半萜化合物松柏醇 A (1) 和 B(2)。
• Lipase-mediated resolution of substituted 2-aryl-propanols: application to the enantioselective synthesis of phenolic sesquiterpenes
  作者：Stefano Serra

  DOI：10.1016/j.tetasy.2011.03.012

  日期：2011.3

  A comprehensive study of the lipase-mediated resolution of substituted 2-aryl-propanols is reported. The latter alcohols were submitted to the irreversible acetylation catalyzed either by PPL, CRL, or lipase PS. The enantioselectivity of these transformations was dependent on the type of lipase used. The type of substituents and particularly their position on the aromatic ring strongly affected the selectivity of the reaction. The experiments described prove that PPL is the more versatile lipase catalyzing the acetylation with an enantiomeric ratio (E) value that ranges from 1 up to 144, depending on the substrate used. Conversely, the same transformations were catalyzed by CRL and lipase PS with an enantiomeric ratio value, which is always less than 5. The remarkable behavior of PPL was exploited in the large scale resolution of some substituted 2-aryl-propanols whose enantiomeric forms are relevant building blocks in the enantioselective synthesis of phenolic sesquiterpenes. By these means, the synthesis of (S)-turmeronol B and the formal syntheses of (R)-curcumene, (R)-curcuphenol, (R)-xanthorrhizol, and (R)-curcuhydroquinone were accomplished. (C) 2011 Elsevier Ltd. All rights reserved.