1-iodobicyclo<1.1.1>pentane | 133692-73-6

• 分子结构分类: 有机化合物 - 有机卤素化合物 - 有机碘化物
• 英文名称: 1-iodobicyclo<1.1.1>pentane
• 英文别名: 1-iodobicyclo[1.1.1]pentane
• CAS: 133692-73-6
• 化学式: C₅H₇I
• 分子量: 194.015
• InChiKey: JQBKEUBPDXVQKD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  6
• 可旋转键数：
  0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  1-iodobicyclo<1.1.1>pentane 在 sodium azide 、 18-冠醚-6 作用下， 以 二甲基亚砜 为溶剂， 反应 48.0h， 生成 3-methylenecyclobutyl-1 iodide 、 3-methylenecyclobutyl-1 azide 、 Bicyclo<1.1.0>butyl-1-carbinyl azide
  参考文献：
  名称：

  Formation and Reactions of Bicyclo[1.1.1]pentyl-1 Cations

  摘要：

  The ionization of l-bicyclo[1.1.1]pentyl halides was shown to initially form the 1,3-bridged bicycle[1.1.1]pentyl-l cation. It appears to be a transition state that leads to the bicyclo[1.1.0]butyl-1-carbinyl cation which can be trapped with azide ion and can be directly observed by NMR in SO2CIF. Although the major products of solvolysis of the halides are 3-methylenecyclobutyl derivatives, the corresponding cation was calculated to have a significantly higher energy than the bicyclobutylcarbinyl ion. Therefore, the products are probably formed by an attack of the nucleophile on the latter ion, accompanied by bond migration. The bridgehead iodide reacts under solvolytic conditions with azide ion to form bicyclo[1.1.0]butyl-l azide as a product. It also reacts with potassium hydroxide to give [1.1.1]propellane, and the same reaction occurs on dissolving in acetonitrile or pyridine. The reaction of 1,3-diiodobicyclo[1.1.1]pentane with ethoxide ion also was found to give [1.1.1]propellane via a nucleophilic attack on one of the iodines. The propellane reacts with methyl hypoiodite to give 3-iodobicyclo[1.1.1]pentyl-l cation, which can react with methanol to give 3-methoxybicyclo[1.1.1]pentyl-l iodide and with azide ion to give 3-iodobicyclo[1.1.1]pentyl-1 azide. These data provide evidence for a discrete 3-iodobicyclo[1.1.1]pentyl-l cation intermediate. The effect of substituents on the rate of solvolysis of bicyclo[1.1.1]pentyl-l iodide was studied. With 3-aryl substituents, a value of rho = -1.7 was found, which is similar to that observed in the solvolysis of 3-arylcyclobutyl tosylates (rho = -1.6). The 3-substituted bicyclopentyl halides usually form the corresponding 3-methylenecyclobutyl cations rather than bicyclo[1.1.0]butyl-1-carbinyl ions, because most substituents will help stabilize the former type of ion.

  DOI：

  10.1021/ja00105a046
• 作为产物：
  描述：

  (2-sulfanylidenepyridin-1-yl) bicyclo[1.1.1]pentane-1-carboxylate 在 2-碘-1,1,1-三氟乙烷 作用下， 以 二氯甲烷 为溶剂， 反应 30.0h， 以87%的产率得到1-iodobicyclo<1.1.1>pentane
  参考文献：
  名称：

  Della, Ernest W.; Taylor, Dennis K., Australian Journal of Chemistry, 1991, vol. 44, # 6, p. 881 - 885

  摘要：

  DOI：

文献信息

• Reactions of [1.1.1]propellane
  作者：Kenneth B. Wiberg、Sherman T. Waddell

  DOI：10.1021/ja00162a022

  日期：1990.3

  The free radical addition reactions of [1.1.1] propellane (1) are described in some detail and allowed the preparation of a wide variety of 1,3-disubstituted bicyclo [1.1.1.] pentanes. The reaction of 1 with free radicals was more rapid than that of bicyclo [1.1.0] butane (2), whereas bicyclo [2.1.0] pentane (3) was relatively inert

  [1.1.1] 推进烷 (1) 的自由基加成反应进行了一些详细的描述，并允许制备各种 1,3-二取代双环 [1.1.1.] 戊烷。1 与自由基的反应比双环 [1.1.0] 丁烷 (2) 更快，而双环 [2.1.0] 戊烷 (3) 相对惰性
• α‐Cyclodextrin Encapsulation of Bicyclo[1.1.1]pentane Derivatives: A Storable Feedstock for Preparation of [1.1.1]Propellane
  作者：Tadafumi Matsunaga、Junichiro Kanazawa、Tomohiro Ichikawa、Mei Harada、Yusuke Nishiyama、Nghia Tuan Duong、Takashi Matsumoto、Kazunori Miyamoto、Masanobu Uchiyama

  DOI：10.1002/anie.202014997

  日期：2021.2

  The bicyclo[1.1.1]pentane (BCP) scaffold is useful in medicinal chemistry, and many protocols are available for synthesizing BCP derivatives from [1.1.1]propellane. Here, we report (1) the α‐cyclodextrin (α‐CD) encapsulation of BCP derivatives, affording a stable, readily storable material from which BCPs can be easily and quantitatively recovered and (2) new and simple protocols for deiodination reaction

  双环[1.1.1]戊烷（BCP）支架可用于药物化学，许多协议可用于由[1.1.1]丙炔合成BCP衍生物。在这里，我们报告（1）BCP衍生物的α-环糊精（α-CD）包封，提供了一种稳定，易于储存的材料，可以从中轻松，定量地回收BCP，以及（2）1种脱碘反应的新方法和简单方法，3-二碘代BCP在质子/非质子/极性/非极性溶剂中提供[1.1.1]丙炔。这些方法的组合可在温和条件下，从含有1,3-二碘代BCP的α-CD胶囊中，按需简单，按需制备[1.1.1]丙炔。
• Della, Ernest W.; Taylor, Dennis K., Australian Journal of Chemistry, 1991, vol. 44, # 6, p. 881 - 885
  作者：Della, Ernest W.、Taylor, Dennis K.

  DOI：——

  日期：——
• Formation and Reactions of Bicyclo[1.1.1]pentyl-1 Cations
  作者：Kenneth B. Wiberg、Neil McMurdie

  DOI：10.1021/ja00105a046

  日期：1994.12

  The ionization of l-bicyclo[1.1.1]pentyl halides was shown to initially form the 1,3-bridged bicycle[1.1.1]pentyl-l cation. It appears to be a transition state that leads to the bicyclo[1.1.0]butyl-1-carbinyl cation which can be trapped with azide ion and can be directly observed by NMR in SO2CIF. Although the major products of solvolysis of the halides are 3-methylenecyclobutyl derivatives, the corresponding cation was calculated to have a significantly higher energy than the bicyclobutylcarbinyl ion. Therefore, the products are probably formed by an attack of the nucleophile on the latter ion, accompanied by bond migration. The bridgehead iodide reacts under solvolytic conditions with azide ion to form bicyclo[1.1.0]butyl-l azide as a product. It also reacts with potassium hydroxide to give [1.1.1]propellane, and the same reaction occurs on dissolving in acetonitrile or pyridine. The reaction of 1,3-diiodobicyclo[1.1.1]pentane with ethoxide ion also was found to give [1.1.1]propellane via a nucleophilic attack on one of the iodines. The propellane reacts with methyl hypoiodite to give 3-iodobicyclo[1.1.1]pentyl-l cation, which can react with methanol to give 3-methoxybicyclo[1.1.1]pentyl-l iodide and with azide ion to give 3-iodobicyclo[1.1.1]pentyl-1 azide. These data provide evidence for a discrete 3-iodobicyclo[1.1.1]pentyl-l cation intermediate. The effect of substituents on the rate of solvolysis of bicyclo[1.1.1]pentyl-l iodide was studied. With 3-aryl substituents, a value of rho = -1.7 was found, which is similar to that observed in the solvolysis of 3-arylcyclobutyl tosylates (rho = -1.6). The 3-substituted bicyclopentyl halides usually form the corresponding 3-methylenecyclobutyl cations rather than bicyclo[1.1.0]butyl-1-carbinyl ions, because most substituents will help stabilize the former type of ion.