(S)-4,4,5,5-tetramethyl-2-(1-phenylbut-3-en-2-yl)-1,3,2-dioxaborolane | 1267551-66-5

• 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: (S)-4,4,5,5-tetramethyl-2-(1-phenylbut-3-en-2-yl)-1,3,2-dioxaborolane
• 英文别名: 4,4,5,5-tetramethyl-2-[(2S)-1-phenylbut-3-en-2-yl]-1,3,2-dioxaborolane
• CAS: 1267551-66-5
• 化学式: C₁₆H₂₃BO₂
• 分子量: 258.168
• InChiKey: FBQOQXOAEFNKHL-CQSZACIVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.88
• 重原子数：
  19
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (S)-4,4,5,5-tetramethyl-2-(1-phenylbut-3-en-2-yl)-1,3,2-dioxaborolane 在 双氧水 、 sodium hydroxide 作用下， 以 水 、 乙酸乙酯 为溶剂， 生成 (S)-(+)-1-phenylbut-3-en-2-ol
  参考文献：
  名称：

  Stereoconvergent Synthesis of Chiral Allylboronates from an E/Z Mixture of Allylic Aryl Ethers Using a 6-NHC−Cu(I) Catalyst

  摘要：

  We present a 6-NHC-Cu(I) complex that provides alpha-substituted allylboronates using allylic aryl ether substrates. The method was discovered by comparison of the chemoselectivities exhibited by complexes 1a, 1b, 2, and 3. We observed that 1a preferentially reacts with electron-rich alkenes over electron-deficient alkenes. Development of an asymmetric method revealed that 1b reacts with both the E and Z isomers to provide the same absolute configuration without showing E-Z isomerization. This stereoconvergent reaction occurs with high yields (av 86%), high S(N)2` selectivity (> 99:1), and high ee (av 94%) and exhibits wide functional-group tolerance using pure E or Z isomer or E/Z alkene mixtures. The stereoconvergent feature enables the use of many different olefination strategies for substrate production, including cross-metathesis. Chiral allylboronates could be purified by silica gel chromatography and stored in the freezer without decomposition.

  DOI：

  10.1021/ja1112518
• 作为产物：
  描述：

  1-nitro-3-((4-phenylbut-2-en-1-yl)oxy)benzene 、 联硼酸频那醇酯 在 rac-[CuCl(C₁₀H₆N₃(phenyl)2C₆H₂(CH₃)2C(CH₃)3)] NaOC(CH₃)3 、 CH₃OH 作用下， 以 乙醚 为溶剂， 以95%的产率得到(S)-4,4,5,5-tetramethyl-2-(1-phenylbut-3-en-2-yl)-1,3,2-dioxaborolane
  参考文献：
  名称：

  Stereoconvergent Synthesis of Chiral Allylboronates from an E/Z Mixture of Allylic Aryl Ethers Using a 6-NHC−Cu(I) Catalyst

  摘要：

  We present a 6-NHC-Cu(I) complex that provides alpha-substituted allylboronates using allylic aryl ether substrates. The method was discovered by comparison of the chemoselectivities exhibited by complexes 1a, 1b, 2, and 3. We observed that 1a preferentially reacts with electron-rich alkenes over electron-deficient alkenes. Development of an asymmetric method revealed that 1b reacts with both the E and Z isomers to provide the same absolute configuration without showing E-Z isomerization. This stereoconvergent reaction occurs with high yields (av 86%), high S(N)2` selectivity (> 99:1), and high ee (av 94%) and exhibits wide functional-group tolerance using pure E or Z isomer or E/Z alkene mixtures. The stereoconvergent feature enables the use of many different olefination strategies for substrate production, including cross-metathesis. Chiral allylboronates could be purified by silica gel chromatography and stored in the freezer without decomposition.

  DOI：

  10.1021/ja1112518

文献信息

• [EN] SIMPLE ORGANIC MOLECULES AS CATALYSTS FOR PRACTICAL AND EFFICIENT ENANTIOSELECTIVE SYNTHESIS OF AMINES AND ALCOHOLS<br/>[FR] MOLÉCULES ORGANIQUES SIMPLES EN TANT QUE CATALYSEURS POUR LA SYNTHÈSE ÉNANTIOSÉLECTIVE PRATIQUE ET EFFICACE D'AMINES ET D'ALCOOLS
  申请人：TRUSTEES BOSTON COLLEGE

  公开号：WO2013131043A1

  公开（公告）日：2013-09-06

  The present invention provides organic molecules and methods thereof for reactions between organoboron reagents and double bonds, such as imines or carbonyls, to stereoselectively provide chiral products including amines and alcohols, entities useful for the preparation of biologically active molecules.

  本发明提供了有机分子及其方法，用于有机硼试剂与双键（如亚胺或羰基）之间的反应，以立体选择性地提供手性产物，包括胺和醇等实体，用于制备具有生物活性的分子。
• Stereoconvergent Synthesis of Chiral Allylboronates from an <i>E</i>/<i>Z</i> Mixture of Allylic Aryl Ethers Using a 6-NHC−Cu(I) Catalyst
  作者：Jin Kyoon Park、Hershel H. Lackey、Brian A. Ondrusek、D. Tyler McQuade

  DOI：10.1021/ja1112518

  日期：2011.3.2

  We present a 6-NHC-Cu(I) complex that provides alpha-substituted allylboronates using allylic aryl ether substrates. The method was discovered by comparison of the chemoselectivities exhibited by complexes 1a, 1b, 2, and 3. We observed that 1a preferentially reacts with electron-rich alkenes over electron-deficient alkenes. Development of an asymmetric method revealed that 1b reacts with both the E and Z isomers to provide the same absolute configuration without showing E-Z isomerization. This stereoconvergent reaction occurs with high yields (av 86%), high S(N)2` selectivity (> 99:1), and high ee (av 94%) and exhibits wide functional-group tolerance using pure E or Z isomer or E/Z alkene mixtures. The stereoconvergent feature enables the use of many different olefination strategies for substrate production, including cross-metathesis. Chiral allylboronates could be purified by silica gel chromatography and stored in the freezer without decomposition.