(R)-(-)-1-(benzofuran-2-yl)-2-bromoethanol | 343614-07-3

• 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: (R)-(-)-1-(benzofuran-2-yl)-2-bromoethanol
• 英文别名: (1R)-1-(1-benzofuran-2-yl)-2-bromoethanol
• CAS: 343614-07-3
• 化学式: C₁₀H₉BrO₂
• 分子量: 241.084
• InChiKey: KYUDDZADGQYTPP-QMMMGPOBSA-N

物化性质

• 沸点：
  329.6±27.0 °C(Predicted)
• 密度：
  1.600±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  13
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  33.4
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (R)-(-)-1-(benzofuran-2-yl)-2-bromoethanol 在 sodium hydroxide 作用下， 以 乙醚 、 正戊烷 为溶剂， 反应 6.0h， 生成 (S)-(-)-1-(benzofuran-2-yl)-2-(n-butylamino)ethanol
  参考文献：
  名称：

  Enantioselective Synthesis of 2- and 3-Benzofuryl b-Amino Alcohols

  摘要：

  Enantioselective reduction of 2- and 3-bromoacetylbenzofurans with (-)-B-chlorodiisopinocampheylborane produced the corresponding bromohydrins which were transformed into (S)-(benzofuran-2-yl)oxirane of 70% ee and (S)-(benzofuran-3-yl)oxirane of 71% ee, respectively. The epoxides treated with primary alkylamines gave the corresponding (S)-1-(benzofuran-2- and -3-yl)-2-(alkylamino)ethanols.

  DOI：

  10.3987/com-00-9143
• 作为产物：
  描述：

  2-(溴乙酰基)苯并呋喃 在 (-)-diisopinocamphenylborane chloride 作用下， 以 四氢呋喃 为溶剂， 反应 27.0h， 以11.60 g的产率得到(R)-(-)-1-(benzofuran-2-yl)-2-bromoethanol
  参考文献：
  名称：

  Enantioselective Synthesis of 2- and 3-Benzofuryl b-Amino Alcohols

  摘要：

  Enantioselective reduction of 2- and 3-bromoacetylbenzofurans with (-)-B-chlorodiisopinocampheylborane produced the corresponding bromohydrins which were transformed into (S)-(benzofuran-2-yl)oxirane of 70% ee and (S)-(benzofuran-3-yl)oxirane of 71% ee, respectively. The epoxides treated with primary alkylamines gave the corresponding (S)-1-(benzofuran-2- and -3-yl)-2-(alkylamino)ethanols.

  DOI：

  10.3987/com-00-9143

文献信息

• Microbiological bio-reduction of prochiral carbonyl compounds by antimycotic agent Boni Protect
  作者：Renata Kołodziejska、Renata Studzińska、Marcin Kwit、Maciej Jelecki、Agnieszka Tafelska-Kaczmarek

  DOI：10.1016/j.catcom.2017.07.021

  日期：2017.11

  The selective properties of the fungus Aureobasidium pullulans, in the antifungal agent Boni Protect, were investigated in the fermentative bioreduction of selected carbonyl compounds. Catalyzed by oxidoreductases contained in the microorganism Aureobasidium pullulans highly enantioselective biotransformation of prochiral ketones provides the secondary alcohols when the reaction is done in the presence

  在发酵生物还原所选的羰基化合物中，研究了抗真菌剂Boni Protect中真菌Aureobasidium pullulans的选择性特性。当在特定添加剂的存在下进行反应时，由手性酮的对映体的高度对映选择性生物转化被微生物Aureobasidium pullulans中所含的氧化还原酶催化提供了仲醇。铝芽孢杆菌支链淀粉还被证明是减少α-和β-酮酸酯的有效生物试剂。在发酵条件下无需使用添加剂即可获得光学纯的羟基酯。
• Chiral terpene auxiliaries III: spiroborate esters from (1R,2S,3R,5R)-3-amino-apopinan-2-ol as highly effective catalysts for asymmetric reduction of ketones with borane
  作者：Marta Ćwiklińska、Marek P. Krzemiński、Agnieszka Tafelska-Kaczmarek

  DOI：10.1016/j.tetasy.2015.10.018

  日期：2015.12

  New spiroborate esters, derived from terpene amino alcohols, (S)-prolinol, and 2-aminoethanol, were employed as catalysts in the borane reduction of acetophenone and other aryl alkyl and halogenated ketones. The corresponding alcohols were obtained in high yields and with enantioselectivities up to 98% ee. The influence of the amino alcohol and the diol moieties of spiroborate on the reaction selectivity was examined. The catalyst load, the nature of the solvent, the borane source, and the reaction conditions were also investigated. (c) 2015 Elsevier Ltd. All rights reserved.
• Enantioselective reduction of benzofuryl halomethyl ketones: asymmetric synthesis of (R)-bufuralol
  作者：Marek Zaidlewicz、Agnieszka Tafelska-Kaczmarek、Andrzej Prewysz-Kwinto

  DOI：10.1016/j.tetasy.2005.08.012

  日期：2005.10

  Enantioselective reduction of representative 2-(bromoacetyl)- and 2-(chloroacetyl)benzofurans with (-)-B-chloro-diisopinocampheylborane and by transfer hydrogenation with formic acid/triethylamine in the presence of RhCl[R,R-TsD-PEN](C5Me5) is described. Transfer hydrogenation of the chloro ketones produced the corresponding chlorohydrins of >= 95% ee. (R)-Bufuralol of 96% ce was prepared from the corresponding chloro ketone by transfer hydrogenation-substitution. (c) 2005 Elsevier Ltd. All rights reserved.