3-tert-butyldimethylsilyloxy-2-methylpropanal | 104701-87-3

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: 3-tert-butyldimethylsilyloxy-2-methylpropanal
• 英文别名: 3-{[1-(t-butyl)-1,1-dimethylsilyl]oxy}-2-methylpropanal；(+/-)-2-methyl-3-(1,1,2,2-tetramethyl-1-silapropoxy)propanal；3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-2-methylpropanal；2-methyl-3-(tert-butyldimethylsiloxy)-propionaldehyde；(+/-)-2-methyl-3-tert-butyldimethylsilyloxypropanal；(2RS)-3-(tert-butyldimethylsiloxy)-2-methylpropanal；Propanal, 3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-2-methyl-；3-[tert-butyl(dimethyl)silyl]oxy-2-methylpropanal
• CAS: 104701-87-3；115648-41-4；97826-89-6；91751-25-6
• 化学式: C₁₀H₂₂O₂Si
• 分子量: 202.369
• InChiKey: OGQRYCJBALFGOQ-UHFFFAOYSA-N

物化性质

• 沸点：
  211.3±23.0 °C(Predicted)
• 密度：
  0.866±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.84
• 重原子数：
  13
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.9
• 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：

  3-tert-butyldimethylsilyloxy-2-methylpropanal 在 samarium diiodide 二甲基氯化铝 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 0.33h， 生成
  参考文献：
  名称：

  二甲基氯化铝和甲基二氯化铝的卓越螯合能力。α-和β-立体中心在螯合控制的羰基加成反应中与烯醇硅烷和氢化物亲核试剂的合并立体化学影响

  摘要：

  介绍了在有利于螯合控制的条件下进行的非手性未取代烯醇硅烷和手性 β-羟基醛的路易斯酸促进 (Mukaiyama) 羟醛反应的立体选择性的系统研究。β-烷氧基和β-甲硅烷氧基醛的烯醇硅烷醛醇反应可以实现良好的立体控制，仅带有一个α-或β-立体中心。对α,β-二取代醛的螯合中间体的检查得出结论，syn 醛非对映异构体具有立体中心的排列，其中α-和β-取代基赋予醛羰基增强的面偏向性。因此观察到合成醛的羟醛反应以均匀优异的非对映面选择性进行。

  DOI：

  10.1021/ja011337j
• 作为产物：
  描述：

  tert-butyldimethyl(2-methylallyloxy)silane 在 硼烷四氢呋喃络合物 、 草酰氯 、 二甲基亚砜 、 三乙胺 作用下， 生成 3-tert-butyldimethylsilyloxy-2-methylpropanal
  参考文献：
  名称：

  Relative Asymmetric Induction in the Intramolecular Reaction between Alkynes and Cyclopropylcarbene−Chromium Complexes:  Stereocontrolled Synthesis of Five-Membered Rings Fused to Oxygen Heterocycles

  摘要：

  Synthesis of cyclopentenone derivatives fused to oxygen heterocycles by means of the intramolecular coupling of alkynes and cyclopropylcarbene-chromium complexes has been examined for a variety of cases in which the tethering chain features a stereogenic center. In some cases, this process proceeds with a very high degree of stereoselectivity; however, the extent and direction of relative asymmetric induction is very dependent upon the position of the chiral atom within the tethering chain and the length of the tethering chain. In the best case, featuring a two-carbon tether and a stereogenic center at the homopropargylic position (complex 1N), the heterocyclic ring was produced with 97:3 selectivity for the cis heterocycle (3N). In the worst case, featuring a three-carbon tether and a stereogenic center at the homopropargylic position (complexes 1F and ii), no stereoselectivity was observed. Improvement in stereoselectivity was noticed when terminal alkynes were replaced by silylated alkynes and when proton sources were eliminated from the reaction.

  DOI：

  10.1021/jo982144q

文献信息

• Process of producing 8A- and 9A-azalide antibiotics
  申请人：Merck & Co., Inc.

  公开号：US05332807A1

  公开（公告）日：1994-07-26

  A process of producing 8a- and 9a- azalide compounds is disclosed, comprised of reacting an 8a- aza or 9a- aza azalide eastern fragment or a derivative thereof with a compound of the formula: X--A'--Y wherein X and Y are appropriate reactive groups and A' is a fragment or compound which forms the western portion of the azalide, and cyclizing this intermediate to form the target 8a- or 9a-azalide compound. Compounds of formula I, II and III as well as other azalides can be synthesized according to this process.

  披露了一种生产8a-和9a-氮杂环化合物的方法，包括将8a-氮杂或9a-氮杂氮杂环东部片段或其衍生物与以下化合物的反应：X--A'--Y，其中X和Y是适当的反应基团，A'是形成氮杂环西部的片段或化合物，然后将此中间体环化以形成目标8a-或9a-氮杂环化合物。可以根据此过程合成I、II和III型公式化合物以及其他氮杂环化合物。
• Synthesis of (+)-Discodermolide by Catalytic Stereoselective Borylation Reactions
  作者：Zhiyong Yu、Robert J. Ely、James P. Morken

  DOI：10.1002/anie.201405455

  日期：2014.9.1

  1990 and, to this day, remains a compelling synthesis target. Not only does the compound possess fascinating biological activity, but it also presents an opportunity to test current methods for chemical synthesis and provides an inspiration for new reaction development. A new synthesis of discodermolide employs a previously undisclosed stereoselective catalytic diene hydroboration and also establishes

  海洋天然产物 (+)-discodermolide 于 1990 年首次分离出来，至今仍是一个引人注目的合成目标。该化合物不仅具有令人着迷的生物活性，而且还为测试现有化学合成方法提供了机会，并为新反应的开发提供了灵感。 discodermolide 的新合成采用了先前未公开的立体选择性催化二烯硼氢化反应，并且还建立了手性烯醇化物烷基化的策略。此外，discodermolide 的这种合成提供了复杂分子合成中二烯不对称 1,4-二硼化和硼基化二烯-醛偶联的第一个例子。
• Stereoselective Synthesis of Isochromanones by an Asymmetric Ortho-Lithiation Strategy: Synthetic Access to the Isochromanone Core of the Ajudazols
  作者：Sebastian Essig、Dirk Menche

  DOI：10.1021/acs.joc.5b02781

  日期：2016.3.4

  atropisomeric amide axis for stereocontrol. For direct transformation of sterically hindered amides to isochromanones, efficient and mild one-pot protocols involving either O-alkylation or acidic microwave activation were developed. The procedures may be applied also to highly functionalized as well as stereochemically complex and sensitive substrates and demonstrate a high protective group tolerance

  报告了有关异色酮合成的高立体选择性策略的设计，开发和应用的详细信息。该方法基于具有醛亲电试剂的不对称邻位锂化，并利用预取向的阻转异构酰胺轴的手性记忆进行立体控制。对于直接转化的空间位阻酰胺对异色满酮类，无论是涉及高效，温和一锅协议Ø开发了烷基化或酸性微波活化。该方法也可用于高度官能化的以及立体化学复杂和敏感的底物，并显示出高的保护基耐受性。此外，详细研究了轴向手性酰胺的不对称巴豆基硼酸酯。这些方法使人们能够普遍访问具有多达三个连续立体中心的羟基异色酮的所有可能的立体异构体。最后，通过粘胶体线粒体呼吸链的高效抑制剂ajudazols的真实抗，反构型异苯并二氢吡喃酮核心的合成，最终证明了我们方法的真正适用性。
• Phosphine-directed stereo- & regioselective Ni-catalyzed reactions of Grignard reagents with allylic ethers
  作者：Mary T. Didiuk、James P. Morken、Amir H. Hoveyda

  DOI：10.1016/s0040-4020(97)10212-5

  日期：1998.2

  Studies on the directed regio- and stereoselective Ni-catalyzed allylic substitution reactions involving methyl- and phenylmagnesium bromides and various acyclic and cyclic allylic ethers are reported. In the presence of a properly positioned internal Lewis base, CC bonds can be formed catalytically and with excellent levels of selectivity. Internal chelation allows Ni-catalyzed CC bond forming reactions

  报道了对直接的区域选择性和立体选择性镍催化的烯丙基取代反应的研究，该反应涉及甲基和苯基溴化镁以及各种无环和环状烯丙基醚。在适当定位的内部路易斯碱的存在下，可以催化形成C canC键，并具有极好的选择性。内部螯合使Ni催化的CC键形成反应易于进行，以高收率，在环境温度和高度区域和立体控制下完成，否则这些反应是非选择性的，缓慢的或根本不发生的。定向烯烃的异构化突出了金属催化烷基化策略的一个特别吸引人的特征：因为初始产物包含一个保留在内部路易斯碱可及范围内的酯基生成位点，
• Influence of a 2-fluoro substituent on diastereoselectivity in the 1,3-dipolar cycloadditions of nitrones
  作者：Masataka Ihara、Yuko Tanaka、Nobuyuki Takahashi、Yuji Tokunaga、Keiichiro Fukumoto

  DOI：10.1039/a702810e

  日期：——

  It is clear that the role of 1,2-asymmetric induction on the 1,3-dipolar cycloaddition of nitrones is influenced by the presence of a fluorine atom at the C-2 position. 2-Fluoro nitrones, synthesized by three different methods, have been subjected to the intermolecular 1,3-dipolar cycloaddition with ethyl vinyl ether. The stereostructures of isoxazolidines formed were determined by their conversion into 2,7-dioxa-6-azabicyclo[3.2.1]octanes. The diastereoselectivity of 2-fluoro nitrones was the reverse of that of the corresponding 2-hydro nitrones. This fact supports that the conformation with relief from the dipole repulsion between the fluorine atom and the oxygen atom of the nitrone is a preferred one for 2-fluoro nitrones, while the corresponding 2-hydro nitrones adopt the conformation with the least 1,3-allylic strain.

  很明显，在氮酮的1,3-偶极环加成反应中，1,2-不对称诱导作用受到C-2位置氟原子存在的影响。通过三种不同方法合成的2-氟氮酮，与乙烯基乙醚进行了分子间的1,3-偶极环加成反应。所得异恶唑烷的立体结构通过其转化为2,7-二氧-6-氮杂双环[3.2.1]辛烷来确定。2-氟氮酮的非对映选择性与相应的2-羟氮酮相反。这一事实支持以下观点：氟原子与氮酮氧原子之间偶极排斥得到缓解的构象是2-氟氮酮的优选构象，而相应的2-羟氮酮则倾向于采取1,3-同系物应变最小的构象。