tert-butyl ((1R,2R)-2-fluorocyclohexyl)carbamate

• 分子结构分类: 有机化合物 - 有机卤素化合物 - 卤代烷
• 英文名称: tert-butyl ((1R,2R)-2-fluorocyclohexyl)carbamate
• 英文别名: trans-N-Boc-2-fluorocyclohexylamine；tert-butyl N-[(1R,2R)-2-fluorocyclohexyl]carbamate
• 化学式: C₁₁H₂₀FNO₂
• 分子量: 217.284
• InChiKey: JMBBUHQGZLAHBD-RKDXNWHRSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.91
• 拓扑面积：
  38.3
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  7-氮杂双环[4.1.0]庚烷 在 tetrakis(dimethylamido)titanium(IV) 、 叔丁基过氧化氢 、 4-二甲氨基吡啶 、 sodium tetrahydroborate 、 (R, R)-(salen)Co(II) 、 六氟异丙醇 、 苯甲酰氟 、 N,N'-二异丙基碳二亚胺 作用下， 以 四氢呋喃 、 乙醇 、 二氯甲烷 、 甲基叔丁基醚 为溶剂， 反应 76.0h， 生成 tert-butyl ((1R,2R)-2-fluorocyclohexyl)carbamate
  参考文献：
  名称：

  Enantioselective fluoride ring opening of aziridines enabled by cooperative Lewis acid catalysis

  摘要：

  The enantioselective ring opening of aziridines using a latent source of HF is described. A combination of two Lewis acids, (salen)Co and an achiral Ti(IV) cocatalyst, provided optimal reactivity and enantioselectivity for the trans beta-fluoroamine product. The use of a chelating aziridine protecting group was crucial. Acyclic and cyclic meso N-picolinamide aziridines underwent fluoride ring opening in up to 84% ee, and the kinetic resolution of a piperidine-derived aziridine was performed with k(rel)=6.6. The picolinamide group may be readily removed without epimerization of the fluoroamine. Preliminary studies revealed a bimetallic mechanism wherein the chiral (salen)Co catalyst delivers the nucleophile and the Ti(IV) cocatalyst activates the aziridine. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2013.01.062

文献信息

• Synthesis of β-Fluoroamines by Lewis Base Catalyzed Hydrofluorination of Aziridines
  作者：Julia A. Kalow、Dana E. Schmitt、Abigail G. Doyle

  DOI：10.1021/jo300433a

  日期：2012.4.20

  Lewis base catalysis promotes the in situ generation of amine-HF reagents from benzoyl fluoride and a non-nucleophilic alcohol. The hydrofluorination of aziridines to provide beta-fluoroamines using this latent HF source is described. This protocol displays a broad scope with respect to aziridine substitution and N-protecting groups. Examples of regio- and diastereoselective ring opening to access medicinally relevant beta-fluoroamine building blocks are presented.