(1R)-1-acetoxy-1-(benzofuran-2-yl)ethane | 600727-08-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并呋喃
• 英文名称: (1R)-1-acetoxy-1-(benzofuran-2-yl)ethane
• 英文别名: [(1R)-1-(1-benzofuran-2-yl)ethyl] acetate
• CAS: 600727-08-0
• 化学式: C₁₂H₁₂O₃
• 分子量: 204.225
• InChiKey: RKYOQQPENPGJAL-MRVPVSSYSA-N

物化性质

• 沸点：
  274.3±15.0 °C(Predicted)
• 密度：
  1.157±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  39.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (1R)-1-acetoxy-1-(benzofuran-2-yl)ethane 在 lypozyme TL IM 作用下， 以 乙醇 为溶剂， 以96%的产率得到(R)-1-(benzofuran-2-yl)ethanol
  参考文献：
  名称：

  Kinetic resolution of 1-(benzofuran-2-yl)ethanols by lipase-catalyzed enantiomer selective reactions

  摘要：

  Kinetic resolution of racemic 1-(benzofuran-2-yl)ethanols rac-1a-d was performed by lipase-catalyzed enantiomer selective acylation (Emuch greater than100) yielding (1R)-1-acetoxy-1-(benzofuran-2-yl)ethanes (R)-2a-d and (1S)-1-(benzofuran-2-yl)ethanois (S)-1a-d in highly enantiopure form. The degree of enantiomer selectivity for enzymatic alcoholysis/hydrolysis processes starting from racemic 1-acetoxy-1-(benzofuran-2-yl)ethane rac-2 was also tested under various conditions including supercritical CO2 medium. Racemization-free lipase-catalyzed ethanolysis of the (1R)-1-acetoxy-1-(benzofuran-2-yl)ethanes (R)-2a-d yielded almost quantitatively the enantiopure (1R)-1-(benzofuran-2-yl)ethanols (R)-1a-d. (C) 2003 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0957-4166(03)00358-6
• 作为产物：
  描述：

  acetic acid 2-(benzofuran-2-yl)-2-oxo-ethyl ester 在 novozyme 435 作用下， 以 乙醇 为溶剂， 生成 (1R)-1-acetoxy-1-(benzofuran-2-yl)ethane
  参考文献：
  名称：

  Optically active 1-(benzofuran-2-yl)ethanols and ethane-1,2-diols by enantiotopic selective bioreductions

  摘要：

  Enantiotopic selective reduction of 1-(benzofuran-2-yl)ethanones 1a-d, 1-(benzofuran-2-yl)-2-hydroxyethanones 4a-c and 2-acetoxy-1-(benzofuran-2-yl)ethanones 3a-c was performed by baker's yeast for preparation of optically active (benzofuran-2-yl)carbinols [(S)-5a-d, (S)-6a-c and (R)-6a-c, enantiomeric excess from 55 to 93% ee]. (C) 2003 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0957-4166(03)00222-2

文献信息

• Combined Ruthenium(II) and Lipase Catalysis for Efficient Dynamic Kinetic Resolution of Secondary Alcohols. Insight into the Racemization Mechanism
  作者：Belén Martín-Matute、Michaela Edin、Krisztián Bogár、F. Betül Kaynak、Jan-E. Bäckvall

  DOI：10.1021/ja051576x

  日期：2005.6.1

  Pentaphenylcyclopentadienyl ruthenium complexes (3) are excellent catalysts for the racemization of secondary alcohols at ambient temperature. The combination of this process with enzymatic resolution of the alcohols results in a highly efficient synthesis of enantiomerically pure acetates at room temperature with short reaction times for most substrates. This new reaction was applied to a wide range

  五苯基环戊二烯基钌配合物 (3) 是室温下仲醇外消旋化的极好催化剂。该过程与醇的酶促拆分相结合，可以在室温下高效合成对映异构纯的乙酸酯，大多数底​​物的反应时间都很短。这种新反应适用于包括杂芳族醇在内的多种官能化醇，对于后者中的许多醇，首次通过动态动力学拆分 (DKR) 有效制备了对映纯乙酸酯。制备并研究了不同取代的环戊二烯基钌配合物作为醇外消旋化的催化剂。发现五芳基取代的环戊二烯基配合物是外消旋化的高效催化剂。用烷基取代芳基之一大大减慢了外消旋化过程。氢化钌 eta(5)-Ph(5)CpRu(CO)(2)H (8) 催化 (S)-1-苯基乙醇外消旋化的研究表明外消旋化发生在钌的配位范围内催化剂。在对甲苯基甲基酮（1 当量）存在下进行的 (S)-1-苯基乙醇外消旋化中缺乏酮交换支持这一结论，这产生 <1% 的 1-(对甲苯基)乙醇. 氯化钌和碘化物配合物 3a 和 3c 以及氢化钌配合物 8
• Tailored sol–gel immobilized lipase preparates for the enzymatic kinetic resolution of heteroaromatic alcohols in batch and continuous flow systems
  作者：Mădălina Elena Moisă、Cristina Georgiana Spelmezan、Cristina Paul、Judith Hajnal Bartha-Vári、László Csaba Bencze、Florin Dan Irimie、Csaba Paizs、Fráncisc Péter、Monica Ioana Toşa

  DOI：10.1039/c7ra10157k

  日期：——

  using various binary or ternary precursor mixtures for the EKR of various chiral heteroaromatic secondary alcohols with benzofuran, benzo[b]thiophen, phenothiazine and 2-phenylthiazol moieties. The operational stability in batch process was studied for five selected systems by performing reuse experiments, using the conversion, enantiomeric excesses and enantiomeric ratio as parameters, demonstrating

  通过微调溶胶-凝胶基质的结构，使用各种二元或三元前体混合物对各种手性杂芳族仲醇的EKR进行制备，可以制备出具有良好的热稳定性和操作稳定性的，来自南极假丝酵母B和荧光假单胞菌的固定化固定化脂肪酶。苯并呋喃，苯并[ b]噻吩，吩噻嗪和2-苯基噻唑部分。通过执行重用实验，使用转化率，对映体过量和对映体比率作为参数，对五个选定系统的批处理过程中的操作稳定性进行了研究，证明了溶胶-凝胶脂肪酶制备物性能对生物催化剂和底物结构的依赖性。以生产率为标准，以连续流模式研究了具有最佳性能的生物催化剂的苯并呋喃底物的分离度。在这两种情况下，连续流操作（r flow）下的比反应速率均高于分批模式（r batch）下的反应速率，从而保持了其在进一步工艺开发中的有用性。
• Asymmetric Chemoenzymatic Reductive Acylation of Ketones by a Combined Iron-Catalyzed Hydrogenation-Racemization and Enzymatic Resolution Cascade
  作者：Osama El-Sepelgy、Aleksandra Brzozowska、Magnus Rueping

  DOI：10.1002/cssc.201700169

  日期：2017.4.22

  A general and practical process for the conversion of prochiral ketones into the corresponding chiral acetates has been realized. An iron carbonyl complex is reported to catalyze the hydrogenation–dehydrogenation–hydrogenation of prochiral ketones. By merging the iron‐catalyzed redox reactions with enantioselective enzymatic acylations a wide range of benzylic, aliphatic and (hetero)aromatic ketones

  已经实现了将前手性酮转化为相应的手性乙酸酯的通用且实用的方法。据报道，羰基铁络合物催化前手性酮的加氢-脱氢-氢化。通过将铁催化的氧化还原反应与对映选择性酶促酰化反应合并，可将各种苄基，脂肪族和（杂）芳族酮以及二酮还原性酰化。分离出高产率和对映选择性的相应产物。铁催化剂与分子氢一起用作氢供体，以及容易获得的乙酸乙酯作为酰基供体一起使用，使得这种级联方法在经济价值和环境信誉方面都非常令人感兴趣。
• Merging Iron Catalysis and Biocatalysis-Iron Carbonyl Complexes as Efficient Hydrogen Autotransfer Catalysts in Dynamic Kinetic Resolutions
  作者：Osama El-Sepelgy、Nurtalya Alandini、Magnus Rueping

  DOI：10.1002/anie.201606197

  日期：2016.10.17

  dynamic kinetic resolution of benzylic and aliphatic secondary alcohols. A detailed study of the Knölker‐type iron complexes demonstrated the hydrogen autotransfer of alcohols to proceed under mild reaction conditions and allowed the combination with the enzymatic resolution. Different racemic alcohols were efficiently converted to chiral acetates in good yields and with excellent enantioselectivities

  已经开发了双催化铁/脂肪酶系统，并将其应用于苄基和脂族仲醇的动态动力学拆分。对Knölker型铁配合物的详细研究表明，醇的氢自转移在温和的反应条件下进行，并允许以酶解的方式结合使用。将不同的外消旋醇以良好的收率和优异的对映选择性有效地转化为手性乙酸酯。
• Chiral spiroaminoborate ester as a highly enantioselective and efficient catalyst for the borane reduction of furyl, thiophene, chroman, and thiochroman-containing ketones
  作者：Viatcheslav Stepanenko、Melvin De Jesús、Wildeliz Correa、Lorianne Bermúdez、Cindybeth Vázquez、Irisbel Guzmán、Margarita Ortiz-Marciales

  DOI：10.1016/j.tetasy.2009.11.009

  日期：2009.12

  Prochiral heteroaryl ketones containing furan, thiophene, chroman, and thiochroman moieties were successfully reduced in the presence of 1-10 mol% of spiroaminoborate ester 1 with different borane sources to afford non-racemic alcohols in up to 99% ee. In addition, modest enantioselectivity, around 80% ee, was achieved in the reduction of linear alpha,beta-unsaturated heteroaryl ketones. (C) 2009 Elsevier Ltd. All rights reserved.