3-(2-Chloro-1-hexenylidene)-1,1,2,2-tetramethylcyclopropane

• 分子结构分类: 有机化合物 - 有机卤素化合物 - 乙烯基卤化物
• 英文名称: 3-(2-Chloro-1-hexenylidene)-1,1,2,2-tetramethylcyclopropane
• 化学式: C₁₃H₂₁Cl
• 分子量: 212.763
• InChiKey: NOTXLGCEAQIJLY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.3
• 重原子数：
  14
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.77
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为产物：
  描述：

  2,3-二甲基-2-丁烯 、 1,1,1,3-四氯庚烷 在 potassium tert-butylate 作用下， 以 正己烷 为溶剂， 反应 48.0h， 生成 1-Chlor-1-(1-hexinyl)-2,2,3,3-tetramethylcyclopropan 、 3-(2-Chloro-1-hexenylidene)-1,1,2,2-tetramethylcyclopropane
  参考文献：
  名称：

  摘要：

  When treated with KOH under phase-transfer catalysis or with (BuOK)-O-t, 3-substituted (alkyl or phenyl) 1, 1, 3-tribromo-1-fluoropropanes 1a-c exclusively generate previously unknown (alk-1-ynyl)fluorocarbenes 5a-c, which react with olefins to give 1-(alk-1-ynyl)-1-fluorocyclopropanes 6a-h in 12-69% yields. Under analogous conditions, 3-alkyl- and 3-aryl-3-bromo-1, 1, 1-trichloropropanes 2a-c selectively afford (alk-1-ynyl)chlorocarbenes 7a-c, which are trapped by olefins to form the corresponding 1-(alk-1-ynyl)-1-chlorocyclopropanes 8a-k in 35-70% yields. (Phenylethynyl)chlorocarbene 7a is also selectively generated from 1, 1, 1, 3-tetrachloro-3-phenylpropane (3a) upon its treatment with (BuOK)-O-t. With an excess of 2,3-dimethylbut-2-ene or 2-methylpropene, carbene 7a yields 1-chloro-1-(phenylethynyl)cyclopropanes 8a or 8c, respectively. In contrast, 1, 1, 1, 3-tetrachloroheptane 3b and 3-alkyl- and 3-phenyl-1, 1, 1, 3-tetrabromopropanes 4a,c,f react with bases in the presence of olefins to give, along with the corresponding 1-(alk-1-ynyl)-1-halocyclopropanes 8a,c,d and 11a-f, vinylidenecyclopropanes 12a,c-g, which suggests the generation, under these conditions; both (alk-1-ynyl)halocarbenes 7b and 9a-c and vinylidenecarbenes 10 and 11a-c. The composition and structures of intermediate products in the reactions of tetrahalides 1b, 2a, 2b, 3a, and 3b with (BuOK)-O-t were determined and the mechanisms for carbene generation in these reactions were proposed.

  DOI：

  10.1023/a:1020952513679

文献信息

• ——
  作者：K. N. Shavrin、V. D. Gvozdev、O. M. Nefedov

  DOI：10.1023/a:1020952513679

  日期：——

  When treated with KOH under phase-transfer catalysis or with (BuOK)-O-t, 3-substituted (alkyl or phenyl) 1, 1, 3-tribromo-1-fluoropropanes 1a-c exclusively generate previously unknown (alk-1-ynyl)fluorocarbenes 5a-c, which react with olefins to give 1-(alk-1-ynyl)-1-fluorocyclopropanes 6a-h in 12-69% yields. Under analogous conditions, 3-alkyl- and 3-aryl-3-bromo-1, 1, 1-trichloropropanes 2a-c selectively afford (alk-1-ynyl)chlorocarbenes 7a-c, which are trapped by olefins to form the corresponding 1-(alk-1-ynyl)-1-chlorocyclopropanes 8a-k in 35-70% yields. (Phenylethynyl)chlorocarbene 7a is also selectively generated from 1, 1, 1, 3-tetrachloro-3-phenylpropane (3a) upon its treatment with (BuOK)-O-t. With an excess of 2,3-dimethylbut-2-ene or 2-methylpropene, carbene 7a yields 1-chloro-1-(phenylethynyl)cyclopropanes 8a or 8c, respectively. In contrast, 1, 1, 1, 3-tetrachloroheptane 3b and 3-alkyl- and 3-phenyl-1, 1, 1, 3-tetrabromopropanes 4a,c,f react with bases in the presence of olefins to give, along with the corresponding 1-(alk-1-ynyl)-1-halocyclopropanes 8a,c,d and 11a-f, vinylidenecyclopropanes 12a,c-g, which suggests the generation, under these conditions; both (alk-1-ynyl)halocarbenes 7b and 9a-c and vinylidenecarbenes 10 and 11a-c. The composition and structures of intermediate products in the reactions of tetrahalides 1b, 2a, 2b, 3a, and 3b with (BuOK)-O-t were determined and the mechanisms for carbene generation in these reactions were proposed.