(S)-(-)-4-(dimethylphenylsilyl)-4-(4-methoxyphenyl)-2-butanone

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: (S)-(-)-4-(dimethylphenylsilyl)-4-(4-methoxyphenyl)-2-butanone
• 英文别名: 4-(dimethyl(phenyl)silyl)-4-(4-methoxyphenyl)butan-2-one；(4S)-4-[dimethyl(phenyl)silyl]-4-(4-methoxyphenyl)butan-2-one
• 化学式: C₁₉H₂₄O₂Si
• 分子量: 312.484
• InChiKey: XWABMRBLGPRGIG-IBGZPJMESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.91
• 重原子数：
  22
• 可旋转键数：
  6
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.32
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  4-(dimethyl(phenyl)silyl)but-3-yn-2-ol 在 manganese(IV) oxide 、 氢氧化钾 、 lithium aluminium tetrahydride 、 bis(ethylene)rhodium(I) chloride dimer 、 (1R,4R)-2,5-dibenzylbicyclo[2.2.2]octa-2,5-diene 作用下， 以 四氢呋喃 、 1,4-二氧六环 、 二氯甲烷 为溶剂， 反应 8.0h， 生成 (S)-(-)-4-(dimethylphenylsilyl)-4-(4-methoxyphenyl)-2-butanone
  参考文献：
  名称：

  通过铑/手性二烯催化的不对称1,4-加成反应形成手性有机硅化合物的碳-碳键形成对映选择性。

  摘要：

  [反应：见正文]已开发出一种新的合成方法，该方法通过铑催化的芳基硼酸向β-甲硅烷基的α，β-不饱和羰基化合物的不对称1,4-加成反应来合成手性有机硅化合物。通过使用（R，R）-Bn-bod *作为配体，可以将非常高的对映体过量范围的芳基硼酸与这些底物偶联。所得的β-甲硅烷基1,4-加合物可以转化为β-羟基羰基化合物或烯丙基硅烷，同时保留其立体化学信息。

  DOI：

  10.1021/ol051978+

文献信息

• Cu-Catalyzed Asymmetric Conjugate Additions of Dialkyl- and Diarylzinc Reagents to Acyclic β-Silyl-α,β-unsaturated Ketones. Synthesis of Allylsilanes in High Diastereo- and Enantiomeric Purity
  作者：Monica A. Kacprzynski、Stephanie A. Kazane、Tricia L. May、Amir H. Hoveyda

  DOI：10.1021/ol071331k

  日期：2007.8.1

  [GRAPHICS]A readily available and simple (MW = 444.5 g/mol) valine-based chiral phosphine is used to promote highly efficient catalytic asymmetric conjugate additions of dialkyl- and diarylzinc reagents to acyclic beta-silyl-alpha,beta-unsaturated ketones. The catalytic asymmetric protocol allows access to versatile allylsilanes that bear a trisubstituted olefin in high diastereo- and enantiomeric purity.
• An Insoluble Copper(II) Acetylacetonate–Chiral Bipyridine Complex that Catalyzes Asymmetric Silyl Conjugate Addition in Water
  作者：Taku Kitanosono、Lei Zhu、Chang Liu、Pengyu Xu、Shu̅ Kobayashi

  DOI：10.1021/jacs.5b11418

  日期：2015.12.16

  Acicular purplish crystals were obtained from Cu(acac)(2) and a chiral bipyridine ligand. Although the crystals were not soluble, they nevertheless catalyzed asymmetric silyl conjugate addition of lip ophilic substrates in water. Indeed, the reactions proceeded efficiently only in water; they did not proceed well either in organic solvents or in mixed water/organic solvents in which the catalyst/substrates were soluble. This is in pronounced contrast to conventional organic reactions wherein the catalyst/substrates tend to be in solution. Several advantages of the chiral Cu(II) catalysis in water over previously reported catalyst systems have been demonstrated. Water is expected to play a prominent role in constructing and stabilizing sterically confined transition states and accelerating subsequent protonation to achieve high yields and enantioselectivities.