(R)-α-hydroxycyclooctanone | 140134-29-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (R)-α-hydroxycyclooctanone
• 英文别名: (2R)-2-Hydroxycyclooctanone；(2R)-2-hydroxycyclooctan-1-one
• CAS: 140134-29-8
• 化学式: C₈H₁₄O₂
• 分子量: 142.198
• InChiKey: JRIBPNLXIBZSJA-SSDOTTSWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  10
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.88
• 拓扑面积：
  37.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  (1R,2R)-1,2-环辛烷二醇 在 2,3-butanediol dehydrogenase from Bacillus subtilis 作用下， 以 aq. buffer 为溶剂， 反应 6.0h， 以31.2%的产率得到(R)-α-hydroxycyclooctanone
  参考文献：
  名称：

  外消旋反式环状邻苯二酚的对映选择性生物氧化：对映纯（S，S）-环状邻苯二酚和（R）-α-羟基酮的一锅合成

  摘要：

  AbstractHighly regio‐ and enantioselective alcohol dehydrogenases BDHA (2,3‐butanediol dehydrogenase from Bacillus subtilis BGSC1A1), CDDHPm (cyclic diol dehydrogenase from Pseudomonas medocina TA5), and CDDHRh (cyclic diol dehydrogenase from Rhodococcus sp. Moj‐3449) were discovered for the oxidation of racemic trans‐cyclic vicinal diols. Recombinant Escherichia coli expressing BDHA was engineered as an efficient whole‐cell biocatalyst for the oxidation of (±)‐1,2‐cyclopentanediol, 1,2‐cyclohexanediol, 1,2‐cycloheptane‐diol, and 1,2‐cyclooctanediol, respectively, to give the corresponding (R)‐α‐hydroxy ketones in >99% ee and (S,S)‐cyclic diols in >99% ee at 50% conversion in one pot. Escherichia coli (BDHA‐LDH) co‐expressing lactate dehydrogenase (LDH) for intracellular regeneration of NAD+ catalyzed the regio‐ and enantioselective oxidation of (±)‐1,2‐dihydroxy‐1,2,3,4‐tetrahydronaphthalene to produce the corresponding (R)‐α‐hydroxy ketone in >99% ee and (S,S)‐cyclic diol in 96% ee at 49% conversion. Preparative biotransformations were also demonstrated. Thus, a novel and useful method for the one‐pot synthesis of both vicinal diols and α‐hydroxy ketones in high ee was developed via highly regio‐ and enantioselective oxidations of the racemic vicinal diols.magnified image

  DOI：

  10.1002/adsc.201300301

文献信息

• Site-Selective and Product Chemoselective Aliphatic C–H Bond Hydroxylation of Polyhydroxylated Substrates
  作者：Margarida Borrell、Sergio Gil-Caballero、Massimo Bietti、Miquel Costas

  DOI：10.1021/acscatal.9b05423

  日期：2020.4.17

  Site-selective and product chemoselective aliphatic C–H bond oxidation of 1,2-diols and of polyhydroxylated substrates using iron and manganese catalysts and hydrogen peroxide as terminal oxidant is described. The reaction capitalizes on the use of fluorinated alcohol solvents such as 2,2,2-trifluoroethanol (TFE) and 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP), which exert a strong polarity reversal in

  介绍了使用铁和锰催化剂以及过氧化氢作为末端氧化剂对1,2-二醇和多羟基化底物进行位点选择性和产物化学选择性的脂肪族CH键的氧化反应。该反应利用了氟化醇溶剂，例如2,2,2-三氟乙醇（TFE）和1,1,1,3,3,3,3-六氟-2-丙醇（HFIP），可产生强烈的极性反转1,2-二醇的羟基部分通过氢键结合，进而转化为针对HAT的近端C-H键的强烈失活，而HAT则通过假定的高价和亲电金属-氧代物质氧化。结果，描述了复杂的多官能分子（例如类固醇，糖和药物）的位点选择性氧化和产物化学选择性氧化，在偏远且未激活的位置发生独家或主要的C–H键羟化反应。本报告公开了在氟化醇溶剂中由HAT引发的羟基化反应，作为显示出对当代醇氧化具有正交化学选择性的方法，为在密集官能化分子中进行合成规划提供了有用的工具。