t-butyl 1-[(furan-2-yl)methylthio]-2-oxocyclohexanecarboxylate | 1381801-07-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 杂芳族化合物
• 英文名称: t-butyl 1-[(furan-2-yl)methylthio]-2-oxocyclohexanecarboxylate
• CAS: 1381801-07-5
• 化学式: C₁₆H₂₂O₄S
• 分子量: 310.414
• InChiKey: LYXAQXKVFWEAKQ-MRXNPFEDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.74
• 重原子数：
  21.0
• 可旋转键数：
  4.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  56.51
• 氢给体数：
  0.0
• 氢受体数：
  5.0

反应信息

• 作为产物：
  描述：

  tert-butyl 2-oxocyclohexanecarboxylate 在 N-氯代丁二酰亚胺 、 C₃₄H₂₄N₂O 、 copper(II) bis(trifluoromethanesulfonate) 、 三乙胺 作用下， 以 二氯甲烷 、 苯 为溶剂， 生成 t-butyl 1-[(furan-2-yl)methylthio]-2-oxocyclohexanecarboxylate
  参考文献：
  名称：

  Highly Enantioselective Chlorination of β-Keto Esters and Subsequent S_N2 Displacement of Tertiary Chlorides: A Flexible Method for the Construction of Quaternary Stereogenic Centers

  摘要：

  Highly enantioselective chlorination of beta-oxo esters and subsequent stereospecific substitution of tertiary chlorides are described. Enantioselective chlorination of beta-keto esters and malonates was performed using a chiral Lewis acid catalyst prepared from Cu(OTf)(2) and the newly developed spirooxazoline ligand 2 to yield the desired a-chlorinated products with high enantioselectivity (up to 98% ee). Nucleophilic substitution of the resulting chlorides proceeded smoothly to afford a variety of chiral molecules such as alpha-amino, alpha-allcylthio, and alpha-fluoro esters, without loss of enantiopurity. The results of X-ray crystallographic analysis proved that Walden inversion occurs at the chlorinated tertiary carbon center. These results supported the fact that the substitution proceeds via an S(N)2 mechanism.

  DOI：

  10.1021/ja304806j