t-butyl 2-azido-1,2,3,4-tetrahydro-1-oxonaphthalene-2-carboxylate | 1381800-85-6

• 分子结构分类: 有机化合物 - 苯类化合物 - 萘
• 英文名称: t-butyl 2-azido-1,2,3,4-tetrahydro-1-oxonaphthalene-2-carboxylate
• CAS: 1381800-85-6
• 化学式: C₁₅H₁₇N₃O₃
• 分子量: 287.318
• InChiKey: FORZVAONOWKFMA-OAHLLOKOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.21
• 重原子数：
  21.0
• 可旋转键数：
  2.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  92.13
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  t-butyl 2-azido-1,2,3,4-tetrahydro-1-oxonaphthalene-2-carboxylate 在 10 % Pd-BaSO4 作用下， 以 甲醇 为溶剂， 以77%的产率得到tert-butyl (R)-2-amino-1-oxo-1,2,3,4-tetrahydronaphthalene-2-carboxylate
  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
• 作为产物：
  描述：

  tert-butyl (S)-2-chloro-1,2,3,4-tetrahydro-1-oxonaphthalene-2-carboxylate 在 sodium azide 作用下， 以 二甲基亚砜 为溶剂， 以90%的产率得到t-butyl 2-azido-1,2,3,4-tetrahydro-1-oxonaphthalene-2-carboxylate
  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

文献信息

• Enantioselective Iron-Catalyzed Azidation of β-Keto Esters and Oxindoles
  作者：Qing-Hai Deng、Tim Bleith、Hubert Wadepohl、Lutz H. Gade

  DOI：10.1021/ja402082p

  日期：2013.4.10

  The first example of Fe-catalyzed enantioselective azidations of β-keto esters and oxindoles using a readily available N3-transfer reagent is reported. A number of α-azido-β-keto esters were obtained with up to 93% ee, and this methodology also generates 3-substitued 3-azidooxindoles with high enantioselectivities (up to 94%).

  报道了使用现成的 N3 转移试剂对 β-酮酯和羟吲哚进行 Fe 催化的对映选择性叠氮化的第一个例子。获得了许多具有高达 93% ee 的 α-叠氮基-β-酮酯，并且该方法还产生了具有高对映选择性（高达 94%）的 3-取代的 3-叠氮基吲哚。