t-butyl 1-chloro-2-oxocyclohexanecarboxylate | 1381800-60-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: t-butyl 1-chloro-2-oxocyclohexanecarboxylate
• 英文别名: tert-butyl (1S)-1-chloro-2-oxocyclohexane-1-carboxylate
• CAS: 1381800-60-7
• 化学式: C₁₁H₁₇ClO₃
• 分子量: 232.707
• InChiKey: DCDDYWDVVIRNKM-NSHDSACASA-N

物化性质

• 沸点：
  301.7±42.0 °C(Predicted)
• 密度：
  1.13±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.82
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  t-butyl 1-chloro-2-oxocyclohexanecarboxylate 在 sodium azide 作用下， 以 二甲基亚砜 为溶剂， 反应 1.0h， 以95%的产率得到t-butyl 1-azido-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
• 作为产物：
  描述：

  1-吡咯甲酸叔丁酯 在 N-氯代丁二酰亚胺 、 C₃₄H₂₄N₂O 、 copper(II) bis(trifluoromethanesulfonate) 、 sodium hydride 作用下， 以 甲苯 为溶剂， 反应 1.0h， 生成 t-butyl 1-chloro-2-oxocyclohexanecarboxylate
  参考文献：
  名称：

  在叔立体碳上用酚类合成威廉姆森醚：β-酮基酯的形式对映选择性苯氧基化

  摘要：

  首次描述了α-芳氧基-β-酮酸酯的对映选择性形成。路易斯酸催化β-酮酯的对映选择性氯化，随后与酚进行S N 2反应，生成ee高达96％的α-芳氧基-β-酮酯 。还发现α-氯-β-酮基酯的Favorskii重排产生1,2-二酯，其对映体纯度略有降低。

  DOI：

  10.1002/chem.201502042

文献信息

• Catalytic enantioselective chlorination of cyclic β-keto esters in the presence of chiral Pd(II) complexes
  作者：Young Ku Kang、Hee Hun Kim、Kwang Oh Koh、Dae Young Kim

  DOI：10.1016/j.tetlet.2012.05.064

  日期：2012.7

  The catalytic enantioselective electrophilic chlorination promoted by chiral palladium complexes is described. The treatment of β-keto esters with 2,3,4,5,6,6-hexachlorocyclohex-2,4-dienone as chlorine source under mild reaction conditions afforded the corresponding α-chlorinated β-keto esters with excellent enantioselectivities (up to 94% ee).

  描述了由手性钯配合物促进的催化对映选择性亲电子氯化。在温和的反应条件下，用2,3,4,5,6,6-六氯环己基-2,4-二烯酮作为氯源处理β-酮酯，得到相应的α-氯代β-酮酯，其对映选择性极好（最高可达94％ee）。
• Williamson Ether Synthesis with Phenols at a Tertiary Stereogenic Carbon: Formal Enantioselective Phenoxylation of β‐Keto Esters
  作者：Kazutaka Shibatomi、Manato Kotozaki、Nozomi Sasaki、Ikuhide Fujisawa、Seiji Iwasa

  DOI：10.1002/chem.201502042

  日期：2015.9.28

  The enantioselective formation of α‐aryloxy‐β‐keto esters is described for the first time. Lewis acid catalyzed enantioselective chlorination of β‐keto esters and subsequent SN2 reactions with phenols yielded α‐aryloxy‐β‐keto esters with up to 96 % ee. Favorskii rearrangement of α‐chloro‐β‐keto esters was also found to give 1,2‐diesters with slightly reduced enantiopurity.

  首次描述了α-芳氧基-β-酮酸酯的对映选择性形成。路易斯酸催化β-酮酯的对映选择性氯化，随后与酚进行S N 2反应，生成ee高达96％的α-芳氧基-β-酮酯 。还发现α-氯-β-酮基酯的Favorskii重排产生1,2-二酯，其对映体纯度略有降低。
• 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
  作者：Kazutaka Shibatomi、Yoshinori Soga、Akira Narayama、Ikuhide Fujisawa、Seiji Iwasa

  DOI：10.1021/ja304806j

  日期：2012.6.20

  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.