(R,E)-5-(((tert-butyl)diphenylsilyl)oxy)-2,4-dimethylpent-2-enal | 149915-92-4

• 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: (R,E)-5-(((tert-butyl)diphenylsilyl)oxy)-2,4-dimethylpent-2-enal
• 英文别名: (E,4R)-5-[tert-butyl(diphenyl)silyl]oxy-2,4-dimethylpent-2-enal
• CAS: 149915-92-4
• 化学式: C₂₃H₃₀O₂Si
• 分子量: 366.576
• InChiKey: KYMJZAYLXKYBCJ-BQUCVHFLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.34
• 重原子数：
  26
• 可旋转键数：
  8
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.35
• 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：

  (R,E)-5-(((tert-butyl)diphenylsilyl)oxy)-2,4-dimethylpent-2-enal 在 氯代二环己基硼烷 、 4-甲基苯磺酸吡啶 、 二异丁基氢化铝 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 15.5h， 生成 {(E)-(S)-4-[(4R,5S,6S)-6-((R)-2-Benzyloxy-1-methyl-ethyl)-5-methoxy-2,2-dimethyl-[1,3]dioxan-4-yl]-2-methyl-pent-3-enyloxy}-tert-butyl-diphenyl-silane
  参考文献：
  名称：

  High π-face selectivity in anti aldol reactions of E-enol borinates from chiral alkoxymethyl ketones: stereocontrolled synthesis of a C24-C32 polyol subunit of rapamycin

  摘要：

  Using (c-C6H11)2BCl/Et3N, the aldol reactions of the alpha-chiral alkoxymethyl ketones 5 and 6 with achiral aldehydes gives the 1,2-anti-2,4-anti adducts 7 and 8 in 83-95% yield with greater-than-or-equal-to 95% diastereoselectivity. This novel aldol reaction was applied to a concise and highly stereocontrolled synthesis of the C24-C32 subunit 9 of, rapamycin (10).

  DOI：

  10.1021/jo00068a002
• 作为产物：
  描述：

  (2S)-3-{[tert-butyl(diphenyl)silyl]oxy}-2-methylpropanal 在 二异丁基氢化铝 作用下， 生成 (R,E)-5-(((tert-butyl)diphenylsilyl)oxy)-2,4-dimethylpent-2-enal
  参考文献：
  名称：

  High π-face selectivity in anti aldol reactions of E-enol borinates from chiral alkoxymethyl ketones: stereocontrolled synthesis of a C24-C32 polyol subunit of rapamycin

  摘要：

  Using (c-C6H11)2BCl/Et3N, the aldol reactions of the alpha-chiral alkoxymethyl ketones 5 and 6 with achiral aldehydes gives the 1,2-anti-2,4-anti adducts 7 and 8 in 83-95% yield with greater-than-or-equal-to 95% diastereoselectivity. This novel aldol reaction was applied to a concise and highly stereocontrolled synthesis of the C24-C32 subunit 9 of, rapamycin (10).

  DOI：

  10.1021/jo00068a002

文献信息

• Studies toward the Total Synthesis of Sorangiolides and Their Analogues. A Convergent Stereoselective Synthesis of the Macrocyclic Lactone Precursors
  作者：Sanjib Das、Sunny Abraham、Subhash C. Sinha

  DOI：10.1021/ol070517g

  日期：2007.6.1

  key steps used in the synthesis include the sp3-hybridized carbon-carbon Fu cross coupling, the stereoselective Evans' aldol reaction with 1,5-anti induction, the 1,3-diastereoselective syn reduction of a beta-hydroxyketone intermediate, and Mukaiyama macrolactonization reactions.

  描述了作为天然产物的直接前体索兰吉利内酯A和B的直接保护的18-元大环内酯的立体选择性合成。合成中使用的关键步骤包括sp3-杂化的碳-碳Fu交叉偶联，具有1,5-抗诱导作用的立体选择性Evans醛醇缩合反应，β-羟基酮中间体的1,3-非对映选择性syn还原和Mukaiyama大内酯化反应。
• Stereocontrol in Asymmetric S_E′ Reactions of γ-Substituted α,β-Unsaturated Aldehydes
  作者：David R. Williams、Bruce A. Atwater、Seth A. Bawel、Pucheng Ke、Osvaldo Gutierrez、Dean J. Tantillo

  DOI：10.1021/ol403351x

  日期：2014.1.17

  Asymmetric SE′ reactions of (E)- and (Z)-γ-substituted-α,β-unsaturated aldehydes have been studied for the stereocontrolled preparation of nonracemic alcohols. Mild exchange reactions of allylic stannanes provide access to chiral 1,3-bis(tolylsulfonyl)-4,5-diphenyl-1,3-diaza-2-borolidines. These reagents display reactivity with the γ-substituted α,β-unsaturated aldehydes, which is characterized by

  已经研究了（E）-和（Z）-γ-取代的α，β-不饱和醛的不对称S E '反应，用于立体控制非外消旋醇的制备。烯丙基锡烷的温和交换反应可提供手性1,3-双（甲苯磺酰基）-4,5-二苯基-1,3-二氮杂-2-硼烷核苷。这些试剂与γ-取代的α，β-不饱和醛具有反应性，其特征在于立体控制的元素匹配和错配。计算分析（使用密度泛函理论）提供了宝贵的见识，可指导反应的发展。
• α,ω-Functionalized 2,4-Dimethylpentane Dyads and 2,4,6-Trimethylheptane Triads through Asymmetric Hydrogenation
  作者：Jianguang Zhou、Kevin Burgess

  DOI：10.1002/anie.200603635

  日期：2007.2.5
• Synthetic studies towards the total synthesis of tedanolide: formation of the C(13)–C(23) fragment
  作者：Teck-Peng Loh、Li-Chun Feng

  DOI：10.1016/s0040-4039(01)00401-4

  日期：2001.4

  The C(13)C(23) subunit of tedanolide was obtained using a boron-mediated aldol reaction as the key step to control the C-16, and C-17, stereocenters. (C) 2001 Elsevier Science Ltd. All rights reserved.