2-[(E)-(cyanomethylidene)]-5-vinyltetrahydrofuran

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 氧唑烯
• 英文名称: 2-[(E)-(cyanomethylidene)]-5-vinyltetrahydrofuran
• 英文别名: (E)-2-cyanomethylidene-5-vinyltetrahydrofuran；(2E)-2-(5-ethenyloxolan-2-ylidene)acetonitrile
• 化学式: C₈H₉NO
• 分子量: 135.166
• InChiKey: DTKPUFRQCIZWJE-VMPITWQZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  10
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  33
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  5-甲基异恶唑 、 1,4-二溴-2-丁烯 在 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 1.0h， 以50%的产率得到2-[(E)-(cyanomethylidene)]-5-vinyltetrahydrofuran
  参考文献：
  名称：

  Regio- and Diastereoselective Synthesis of 2-Alkylidenetetrahydrofurans by Domino S_N/S_N‘ and S_N/S_N Reactions of 1,3-Dicarbonyl Dianions

  摘要：

  The domino C,O-cyclodialkylation reaction of dilithiated 1,3.-dicarbonyl compounds with 1,4-dibromo-2-butene resulted in regio- and diastereoselective formation of 2-alkylidene-5-vinyltetrahydrofurans. The cyclization of 1,3-dicarbonyl dianions with 1-bromo-2-chloroethane regio- and diastereoselectively afforded 2-alkylidenetetrahydrofurans under thermodynamic reaction control.

  DOI：

  10.1021/jo010303r

文献信息

• Regioselective synthesis of ω-bromo-3-ketosulfones, ω-bromo-3-ketonitriles and 2-(ω-bromoalkyl)benzofurans based on a ‘ring-closing/ring-opening’ strategy
  作者：Nasir Rasool、Muhammad A. Rashid、Helmut Reinke、Christine Fischer、Peter Langer

  DOI：10.1016/j.tet.2007.08.112

  日期：2007.11

  omega-Bromo-3-ketosulfones, omega-bromo-3-ketonitriles and various functionalized 2-(omega-bromoalkyl) benzofurans were chemo-and regioselectively prepared by application of a 'ring-closing/ring-opening' strategy. The cyclization of 3-ketosulfone and 3-ketonitrile dianions with 1-bromo-2-chloroethane or 1,4-dibromobut-2-ene afforded functionalized 2-alkylidenetetrahydrofurans which were subsequently cleaved by reaction with boron tribromide or boron trichloride to give the final products. (c) 2007 Elsevier Ltd. All rights reserved.
• Regio- and Diastereoselective Synthesis of 2-Alkylidenetetrahydrofurans by Domino S_N/S_N‘ and S_N/S_N Reactions of 1,3-Dicarbonyl Dianions
  作者：Peter Langer、Edith Holtz、Inass Karimé、Nehad N. R. Saleh

  DOI：10.1021/jo010303r

  日期：2001.9.1

  The domino C,O-cyclodialkylation reaction of dilithiated 1,3.-dicarbonyl compounds with 1,4-dibromo-2-butene resulted in regio- and diastereoselective formation of 2-alkylidene-5-vinyltetrahydrofurans. The cyclization of 1,3-dicarbonyl dianions with 1-bromo-2-chloroethane regio- and diastereoselectively afforded 2-alkylidenetetrahydrofurans under thermodynamic reaction control.