(3S)-3-(tert-butyldimethylsiloxy)-5-phenyl-1-pentyne | 84733-04-0

• 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: (3S)-3-(tert-butyldimethylsiloxy)-5-phenyl-1-pentyne
• 英文别名: (tert-butyl)(dimethyl)(1-phenethyl-prop-2-ynyloxy)silane；tert-butyldimethyl((5-phenylpent-1-yn-3-yl)oxy)silane；3-(tert-butyldimethylsilyl)oxy-5-phenyl-1-pentyne；5-Phenyl-3-(tert-butyldimethylsiloxy)pentyne；(S)-3-t-butyldimethylsilyloxy-5-phenyl-1-pentyne；(S)-3-t-butyldimethylsilyloxy-5-phenylpent-1-yne；Tert-butyl-dimethyl-(5-phenylpent-1-yn-3-yloxy)silane
• CAS: 84733-04-0
• 化学式: C₁₇H₂₆OSi
• 分子量: 274.478
• InChiKey: JUYWTMASJNJBHK-UHFFFAOYSA-N

物化性质

• 沸点：
  325.4±35.0 °C(Predicted)
• 密度：
  0.923±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.64
• 重原子数：
  19
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.53
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  (3S)-3-(tert-butyldimethylsiloxy)-5-phenyl-1-pentyne 在 硫酸 氢氧化钾 、 lithium aluminium tetrahydride 、 正丁基锂 、 三氟化硼乙醚 、 氢氟酸 、 戴斯-马丁氧化剂 、 对甲苯磺酸 作用下， 以 四氢呋喃 、 二氯甲烷 、 乙腈 、 苯 为溶剂， 反应 16.0h， 生成 2-(Trifluoromethyl)-5-phenylethylfuran
  参考文献：
  名称：

  Synthesis of and Analysis of Thiol Additions to .beta.-Alkyl-.alpha.,.beta.-unsaturated Trifluoromethyl Ketones

  摘要：

  A series of beta-alkyl-alpha,beta-unsaturated trifluoromethyl ketones have been prepared from the corresponding alpha-acetylenic trifluoromethyl ketones. The addition of sulfur nucleophiles was shown by chemical and F-19 NMR studies to proceed exclusively by 1,4-addition with no indication of any 1,2-addition products. The unsaturated trifluoromethyl ketones have been shown to be effective inhibitors of rat cytosolic glutathione-S-transferase.

  DOI：

  10.1021/jo00084a009
• 作为产物：
  描述：

  Tert-butyl-dimethyl-(5-phenyl-1-trimethylsilylpent-1-yn-3-yl)oxysilane 在 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 水 、 乙腈 为溶剂， 反应 0.67h， 以99%的产率得到(3S)-3-(tert-butyldimethylsiloxy)-5-phenyl-1-pentyne
  参考文献：
  名称：

  DBU-Promoted Facile, Chemoselective Cleavage of Acetylenic TMS Group

  摘要：

  使用 1,8-二氮杂双环[5.4.0]十一-7-烯（DBU）可以有效地去除乙炔基三甲基硅烷（TMS）基团。使用 1.0 或甚至 0.1 等效的 DBU，在烷基硅基醚和其他碱不敏感基团存在的情况下，各种末端乙炔基 TMS 基团都能选择性地顺利脱甲基。此外，在这些条件下，TBDMS 和 TIPS 等立体受阻的末端乙炔基硅烷基团仍然保持完好无损。

  DOI：

  10.1055/s-2008-1032078

文献信息

• One-Pot, Three-Step Synthesis of Cyclopropylboronic Acid Pinacol Esters from Synthetically Tractable Propargylic Silyl Ethers
  作者：Jonathan A. Spencer、Craig Jamieson、Eric P. A. Talbot

  DOI：10.1021/acs.orglett.7b01778

  日期：2017.7.21

  propargylic silyl ethers can be converted to complex cyclopropylboronic acid pinacol esters in an efficient one-pot procedure. Terminal acetylenes undergo a Schwartz’s reagent catalyzed hydroboration; subsequent addition of further Schwartz’s reagent and Lewis acid-mediated activation of neighboring silyl ether allows cyclization to access a range of cyclopropylboronic acid pinacol esters. The scope includes

  简单的炔丙基甲硅烷基醚可以有效的一锅法转化为复杂的环丙基硼酸频哪醇酯。末端乙炔经历Schwartz试剂催化的硼氢化反应；随后加入更多的Schwartz试剂和路易斯酸介导的相邻甲硅烷基醚的活化作用，可使环化作用获得一系列环丙基硼酸频哪醇酯。范围包括芳族，脂族，季和螺取代的环丙基环，这些环丙基环可通过Suzuki偶联转化为一系列类似铅的取代环丙基芳基产品。
• C–F Bond Cleavage Enabled Redox-Neutral [4+1] Annulation via C–H Bond Activation
  作者：Cheng-Qiang Wang、Lu Ye、Chao Feng、Teck-Peng Loh

  DOI：10.1021/jacs.6b12142

  日期：2017.2.8

  α-difluoromethylene alkyne as a nontraditional one-carbon reaction partner, a synthetically novel method for the construction of isoindolin-1-one derivatives via Rh(III)-catalyzed [4+1] annulation reaction is reported. The 2-fold C-F bond cleavage not only enables the generation of desired product under an overall oxidant-free condition but also results in a net migration of carbon-carbon triple bond. In addition

  使用 α,α-二氟亚甲基炔作为非传统的单碳反应伙伴，报道了一种通过 Rh(III) 催化的 [4+1] 环化反应构建异吲哚啉-1-one 衍生物的合成新方法。2 倍 CF 键断裂不仅能够在整体无氧化剂的条件下生成所需的产物，而且还会导致碳-碳三键的净迁移。此外，由于采用了温和的反应条件，本反应方案对广泛的官能团具有耐受性。
• Atom Economy in the Metathesis Cross-Coupling of Alkenes and Alkynes
  作者：Joseph R. Clark、Steven T. Diver

  DOI：10.1021/ol200914j

  日期：2011.6.3

  A cross ene-yne metathesis has been achieved at a nearly 1:1 stoichiometry of the unsaturated reactants. This allowed the use of more complex alkene reactants without sacrificing excess alkene reactant. In the alkene, different allylic oxygen protecting groups were explored. Interestingly, alkenes containing the allylic hydroxyl group proved to be the most reactive.

  在不饱和反应物的化学计量比接近1：1的情况下实现了交叉烯-炔的复分解反应。这允许使用更复杂的烯烃反应物而不牺牲过量的烯烃反应物。在烯烃中，探索了不同的烯丙基氧保护基。有趣的是，含有烯丙基羟基的烯烃被证明是最具反应性的。
• Stereoselective Hydrogenolysis of 1,1-Dibromo-1-alkenes and Stereospecific Synthesis of Conjugated (<i>Z</i>)-Alkenyl Compounds
  作者：Jun'ichi Uenishi、Reiko Kawahama、Osamu Yonemitsu、Jiro Tsuji

  DOI：10.1021/jo9812781

  日期：1998.11.1

  The Pd-catalyzed hydrogenolysis of 1,1-dibromoalkenes with Bu3SnH occurs at room temperature stereoselectively to give (Z)-1-bromo-1-alkenes. We sought to determine the optimal reaction conditions and illustrate the scope of this method with 32 dibromoalkenes including alkenyl- and alkynyl-conjugated 1,l-dibromo-l-alkenes 7a-h and 2,2-disubstituted I,1-dibromo-1-alkenes 9a-f. Triphenylphosphine was the best ligand for the Pd-catalyzed hydrogenolysis. A wide range of solvents can be used for this reaction excluding EtOH, AcOH, and CHCl3. However, the reaction proceeds even in these solvents with the addition of a cosolvent or radical scavenger. The reaction of 1,1-diiodo-1-alkene (3) gave a mixture of (Z)-1-iodo-1-alkene (4), (Z)-1-tributylstannyl-1-alkene (5), and a terminal alkene 6, while that of 1,1-dichloroalkene did not occur. This selectivity can be explained by the stereoselective insertion of Pd(0) to a trans bromine-alkenyl carbon bond, successive transmetalation with Bu3SnH, and reductive elimination. The Suzuki and Sonogashira couplings of the resulting (Z)-1-bromo-1-alkenes with alkenyl(dialkoxy)borane and terminal alkyne occurred to give conjugated polyenes and enynes stereospecifically. The Pd-catalyzed hydrogenolysis of 1,l-dibromo-l-alkene and successive cross-coupling can be carried out either in a stepwise manner or in one-pot under the same Pd catalysis. These two processes should be useful for the synthesis of geometrically pure polyene and enyne with a Z-alkenyl unit.
• Equilibrium Control in Enyne Metathesis:  Crossover Studies and the Kinetic Reactivity of (<i>E,Z</i>)-1,3-Disubstituted-1,3-Dienes
  作者：Anthony J. Giessert、Steven T. Diver

  DOI：10.1021/jo0482209

  日期：2005.2.1

  The stereoselectivity of diene bond formation in the ruthenium-carbene mediated intermolecular enyne metathesis was studied. Initial reaction between an alkyne and 1-hexene gave mixtures of E- and Z-isomers in the newly formed 1,3-diene. However, over time the mixtures equilibrated to form mostly the diene of the E-configuration. To evaluate individual reactivity of the E- and Z-dienes, they were independently synthesized. The E-diene was found to be kinetically-stable under nominal metathesis conditions while the Z-diene isomerized to the E-isomer. The Z-isomeric dienes were found to react with other alkenes to produce a new diene of E-configuration. A secondary metathesis mechanism involving ruthenium alkylidene intermediates was invoked to explain the dynamic stereochemistry observed in this study.