2,2-dibenzyl-1,3-dichloropropane | 208725-46-6

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 直链 1,3-二芳基丙烷
• 英文名称: 2,2-dibenzyl-1,3-dichloropropane
• 英文别名: 2,2-bis(benzyl)-1,3-dichloropropane；[2-Benzyl-3-chloro-2-(chloromethyl)propyl]benzene
• CAS: 208725-46-6
• 化学式: C₁₇H₁₈Cl₂
• 分子量: 293.236
• InChiKey: BNFJAVBJHSLNJP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.4
• 重原子数：
  19
• 可旋转键数：
  6
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.29
• 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：

  2,2-dibenzyl-1,3-dichloropropane 在 samarium diiodide 作用下， 以 四氢呋喃 为溶剂， 反应 48.0h， 以69%的产率得到1,1-dibenzylcyclopropane
  参考文献：
  名称：

  Radical 3-exo-tet cyclization of 1,3-dihalopropanes with SmI2 to form cyclopropanes

  摘要：

  The preparation of 1,1-disubstituted and monosubstituted cycloproparres from corresponding 2,2-disubstituted and 2-monosubstituted 1,3-dihalopropanes, respectively, with SMI2 in THF was efficiently carried out. The reaction mechanism was proposed to proceed in a radical 3-exo-tet manner based on Baldwin's rule. (c) 2008 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2008.05.081
• 作为产物：
  描述：

  2,2-二苄基-1,3-丙二醇 在 四氯化碳 、 三苯基膦 作用下， 反应 24.0h， 生成 2,2-dibenzyl-1,3-dichloropropane
  参考文献：
  名称：

  Radical 3-exo-tet cyclization of 1,3-dihalopropanes with SmI2 to form cyclopropanes

  摘要：

  The preparation of 1,1-disubstituted and monosubstituted cycloproparres from corresponding 2,2-disubstituted and 2-monosubstituted 1,3-dihalopropanes, respectively, with SMI2 in THF was efficiently carried out. The reaction mechanism was proposed to proceed in a radical 3-exo-tet manner based on Baldwin's rule. (c) 2008 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2008.05.081

文献信息

• Formation of Cyclopropanes by the Reductive Coupling of 1,3-Dihalides Promoted by Titanocene(II) Species
  作者：Takeshi Takeda、Keiko Shimane、Tooru Fujiwara、Akira Tsubouchi

  DOI：10.1246/cl.2002.290

  日期：2002.3

  The treatment of various 1,3-dihalides including the ones bearing an ester group with the titanocene(II) species produced cyclopropanes in good yields. The reaction of dihalides possessing two secondary halogens proceeded stereoselectively to afford trans-isomers as major products.

  各种含酯基的1,3-二卤化物及其他1,3-二卤化物的处理方法与二茂钛(II)物种发生反应，能够以良好的产率生成环丙烷。具有两个二级卤素的二卤化物的反应立体选择性地进行，主要产物为反式异构体。
• 1,3-DIPHOSPHINOPROPANE LIGANDS AND TRANSITION METAL COMPLEXES FORMED THEREFROM, THEIR PREPARATION AND USE
  申请人：CONSIGLIO NAZIONALE DELLE RICERCHE

  公开号：EP0941230B1

  公开（公告）日：2004-05-12
• 3-exo-tet Cyclization of 2,2-disubstituted 1,3-dihalopropanes with indium in aqueous and ionic liquid solvent system
  作者：Yuhsuke Tsuchiya、Yuhta Izumisawa、Hideo Togo

  DOI：10.1016/j.tet.2009.06.123

  日期：2009.9

  The 3-exo-tet cyclization of 2,2-disubstituted 1,3-dihalopropanes with In powder in THF solution of 20% H2O, dioxane solution of 20% H2O, and ionic liquids, such as [bmim]Br, [bmim]Cl, and [bmin]BF4, respectively, was efficiently carried out to form the corresponding 1,1-disubstituted cyclopropanes in good yields. The cyclopropanation of 2,2-disubstituted 1,3-dihalopropanes with In powder in ionic liquids, such as [bmim]Br, [bmim]Cl, and [bmin]BF4, was markedly accelerated compared with that in a THF solution of 20% H2O and a dioxane solution of 20% H2O. The mechanism was proposed to involve the radical 3-exo-tet cyclization of the formed 3-halopropyl radical. (C) 2009 Elsevier Ltd. All rights reserved.