(R)-(+)-α-(β-hydroxyethyl)isochroman | 177742-20-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: (R)-(+)-α-(β-hydroxyethyl)isochroman
• 英文别名: 2-(isochroman-1-yl)ethanol；(R)-2-(isochroman-1-yl)ethanol；2-[(1R)-3,4-dihydro-1H-isochromen-1-yl]ethanol
• CAS: 177742-20-0
• 化学式: C₁₁H₁₄O₂
• 分子量: 178.231
• InChiKey: JXIIBWMBZVKXBX-LLVKDONJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  13
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.45
• 拓扑面积：
  29.5
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (R)-(+)-α-(β-hydroxyethyl)isochroman 在 sodium tetrahydroborate 、 敌草腈 、 臭氧 作用下， 生成 (S)-1-Isochroman-1-yl-methanol
  参考文献：
  名称：

  External chiral ligand-induced enantioselective lithiation/SE2 reactions of isochroman and phthalan

  摘要：

  Treatment of isochroman and phthalan with a t-BuLi/chiral bis(oxazoline) complex followed by reaction with carbon-electrophiles such as benzaldehyde and CO2 is shown to afford the a-substituted derivatives in moderate-to-high enantioselectivities (up to 97% ee and 83% ee, respectively). The asymmetric induction is proved to occur at the post-lithiation step. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4039(00)01028-5
• 作为产物：
  描述：

  异色满 在 lithium aluminium tetrahydride 、 叔丁基锂 、 (4S,4′S)-(-)-2,2′-(3-戊烯基)双(4-异丙基噁唑啉) 作用下， 以 正己烷 为溶剂， 反应 2.5h， 生成 (R)-(+)-α-(β-hydroxyethyl)isochroman
  参考文献：
  名称：

  External chiral ligand-induced enantioselective lithiation/SE2 reactions of isochroman and phthalan

  摘要：

  Treatment of isochroman and phthalan with a t-BuLi/chiral bis(oxazoline) complex followed by reaction with carbon-electrophiles such as benzaldehyde and CO2 is shown to afford the a-substituted derivatives in moderate-to-high enantioselectivities (up to 97% ee and 83% ee, respectively). The asymmetric induction is proved to occur at the post-lithiation step. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4039(00)01028-5

文献信息

• Copper-Catalyzed Enantioselective Additions to Oxocarbenium Ions: Alkynylation of Isochroman Acetals
  作者：Prantik Maity、Harathi D. Srinivas、Mary P. Watson

  DOI：10.1021/ja207585p

  日期：2011.11.2

  developed an enantioselective, copper(I)-catalyzed addition of terminal alkynes to racemic isochroman acetals. This method is one of the first transition-metal-catalyzed approaches to enantioselective additions to prochiral oxocarbenium ions. In this reaction, TMSOTf is used to form the oxocarbenium ion in situ under conditions compatible with simultaneous formation of the chiral copper acetylide. By

  我们开发了一种对映选择性、铜 (I) 催化的末端炔烃与外消旋异色满缩醛的加成。该方法是第一种对前手性氧代碳鎓离子进行对映选择性加成的过渡金属催化方法。在该反应中，TMSOTf 用于在与同时形成手性铜乙炔化物相容的条件下原位形成氧碳鎓离子。通过使用双（恶唑啉）配体，可以观察到各种富含对映体的 1-炔基异色满的良好产率和对映选择性。
• 10.1021/acs.orglett.4c01969
  作者：Alexandridis, Anestis、Rancon, Thibault、Halliday, Abigail、Kochem, Amélie、Quintard, Adrien

  DOI：10.1021/acs.orglett.4c01969

  日期：——

  newly formed stereocenters. When iron-catalyzed borrowing hydrogen from allylic alcohols was combined with a stereocontrolled organocatalytic oxa-Michael addition, a wide array of chiral tetrahydropyrans were efficiently prepared. The reaction could be performed in a diastereoselective manner from pre-existing stereocenters or enantioselectively from achiral substrates. The key to success was the reactivity

  立体控制的 oxa-Michael 加成具有挑战性，因为该过程具有高度可逆性，最终导致新形成的立体中心外消旋化。当铁催化的烯丙醇借氢与立体控制的有机催化氧杂迈克尔加成相结合时，可以有效地制备多种手性四氢吡喃。该反应可以以非对映选择性方式从预先存在的立体中心进行或以对映选择性方式从非手性底物进行。成功的关键是铁络合物的反应活性，它对烯丙醇脱氢具有选择性，并不可逆地导致反应生成最终产物。
• (<i>S</i>)-(−)-4-[4-[2-(Isochroman-1-yl)ethyl]piperazin-1-yl]benzenesulfonamide, a Selective Dopamine D₄ Antagonist
  作者：Ruth E. TenBrink、Carol L. Bergh、J. Neil Duncan、Douglas W. Harris、R. M. Huff、Robert A. Lahti、Charles F. Lawson、Barry S. Lutzke、Iain J. Martin、Susan A. Rees、Siusaidh K. Schlachter、John C. Sih、Martin W. Smith

  DOI：10.1021/jm960084f

  日期：1996.1.1
• A Chiral Bidentate sp2-N Ligand, Naph-diPIM: Application to CpRu-Catalyzed Asymmetric Dehydrative C-, N-, and O-Allylation
  作者：Kengo Miyata、Hironori Kutsuna、Sho Kawakami、Masato Kitamura

  DOI：10.1002/anie.201100772

  日期：2011.5.9
• Organocatalytic, Enantioselective Synthesis of 1- and 3-Substituted Isochromans via Intramolecular Oxa-Michael Reaction of Alkoxyboronate: Synthesis of (+)-Sonepiprazole
  作者：Barnala Ravindra、Sanjay Maity、Braja Gopal Das、Prasanta Ghorai

  DOI：10.1021/acs.joc.5b00719

  日期：2015.7.17

  The enantioselective oxa-Michael reaction of alkoxyboronate strategy was demonstrated to provide a new and practical route to enantioriched 1- and 3-substituted isochromans using a chiral bifunctional organocatalyst. Furthermore, this methodology was extended to the enantioselective synthesis of (+)-sonepiprazole, a dopamine receptor antagonist.