(S)-2-(isoindolin-2-yl)propan-1-ol

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 异吲哚及其衍生物
• 英文名称: (S)-2-(isoindolin-2-yl)propan-1-ol
• 英文别名: (2S)-2-(1,3-dihydroisoindol-2-yl)propan-1-ol
• 化学式: C₁₁H₁₅NO
• 分子量: 177.246
• InChiKey: PAFZOKJWXPORCM-VIFPVBQESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.1
• 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：
  23.5
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (S)-2-(isoindolin-2-yl)propan-1-ol 在 草酰氯 作用下， 以 二甲基亚砜 为溶剂， 生成 (S)-2-(1,3-Dihydro-isoindol-2-yl)-propionaldehyde
  参考文献：
  名称：

  Diastereoselection during 1,2-Addition of the Allylindium Reagent to α-Thia and α-Amino Aldehydes in Aqueous and Organic Solvents

  摘要：

  The stereochemistry of the indium-promoted reaction of allyl bromide with alpha-thia (PhS and MeS), disubstituted alpha-amino (Bn2N, Me2N, isoindolyl), and protected alpha-amino aldehydes (Ac and Boc) in water has been evaluated. The reactions involving the sulfur derivatives are minimally diastereoselective, indicating that the allylindium reagent is not thiophilic. Chelation is not observed and pi-facial discrimination is achieved via Felkin-Ahn transition states under the steric control of the substituents. The Garner aldehyde is also anti-diastereoselective. Interestingly, N-acetylmannosamine is appreciably responsive to chelation control and is capable of generating 90% of the syn beta-amino alcohol when reacted in a 0.5 M NH4Cl solution. While the alpha-dibenzylamino substituent is too bulky to enter into complexation, the alpha-dimethylamino group is not and can lead to high levels (99%) of syn diastereomer. The size of other neighboring substituents does have an impact on pi-facial discrimination in these systems and can erode the stereoselectivity accordingly.

  DOI：

  10.1021/jo970274d
• 作为产物：
  描述：

  邻苯二甲酰基-L-丙氨酸 在 lithium aluminium tetrahydride 、 三甲基氯硅烷 作用下， 生成 (S)-2-(isoindolin-2-yl)propan-1-ol
  参考文献：
  名称：

  Diastereoselection during 1,2-Addition of the Allylindium Reagent to α-Thia and α-Amino Aldehydes in Aqueous and Organic Solvents

  摘要：

  The stereochemistry of the indium-promoted reaction of allyl bromide with alpha-thia (PhS and MeS), disubstituted alpha-amino (Bn2N, Me2N, isoindolyl), and protected alpha-amino aldehydes (Ac and Boc) in water has been evaluated. The reactions involving the sulfur derivatives are minimally diastereoselective, indicating that the allylindium reagent is not thiophilic. Chelation is not observed and pi-facial discrimination is achieved via Felkin-Ahn transition states under the steric control of the substituents. The Garner aldehyde is also anti-diastereoselective. Interestingly, N-acetylmannosamine is appreciably responsive to chelation control and is capable of generating 90% of the syn beta-amino alcohol when reacted in a 0.5 M NH4Cl solution. While the alpha-dibenzylamino substituent is too bulky to enter into complexation, the alpha-dimethylamino group is not and can lead to high levels (99%) of syn diastereomer. The size of other neighboring substituents does have an impact on pi-facial discrimination in these systems and can erode the stereoselectivity accordingly.

  DOI：

  10.1021/jo970274d

文献信息

• Hydrogen‐Borrowing Alkylation of 1,2‐Amino Alcohols in the Synthesis of Enantioenriched γ‐Aminobutyric Acids
  作者：Christopher J. J. Hall、William R. F. Goundry、Timothy J. Donohoe

  DOI：10.1002/anie.202100922

  日期：2021.3.22

  For the first time we have been able to employ enantiopure 1,2‐amino alcohols derived from abundant amino acids in C−C bond‐forming hydrogen‐borrowing alkylation reactions. These reactions are facilitated by the use of the aryl ketone Ph*COMe. Racemisation of the amine stereocentre during alkylation can be prevented by the use of sub‐stoichiometric base and protection of the nitrogen with a sterically

  我们首次能够在 C-C 键形成借氢烷基化反应中使用源自丰富氨基酸的对映体纯 1,2-氨基醇。使用芳基酮 Ph*COMe 可以促进这些反应。通过使用亚化学计量的碱并用位阻三苯甲烷（三苯甲基）或苄基保护氮，可以防止烷基化过程中胺立构中心的外消旋化。 Ph* 和三苯甲基在一锅中即可轻松裂解，得到 γ-氨基丁酸 (GABA) 盐酸盐产品，无需进一步纯化。这两个步骤可以依次进行，无需分离借氢中间体，从而无需柱色谱法。