(2R)-1-bromo-2,3-dimethyl-3-butene | 617714-92-8

• 分子结构分类: 有机化合物 - 有机卤素化合物 - 有机溴化物
• 英文名称: (2R)-1-bromo-2,3-dimethyl-3-butene
• 英文别名: (R)-4-bromo-2,3-dimethylbut-1-ene；(3R)-4-bromo-2,3-dimethylbut-1-ene
• CAS: 617714-92-8
• 化学式: C₆H₁₁Br
• 分子量: 163.057
• InChiKey: KHEGBTSWRVDATP-LURJTMIESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  7
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.67
• 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：

  (2R)-1-bromo-2,3-dimethyl-3-butene 在 咪唑 、 magnesium 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 为溶剂， 反应 17.17h， 生成 (3S,6S)-6,8-bis-(tert-butyldimethylsilanyloxy)-2,3-dimethyloct-1-ene
  参考文献：
  名称：

  Studies for the enantiocontrolled preparation of substituted tetrahydropyrans: applications for the synthesis of leucascandrolide A macrolactone

  摘要：

  Strategies for the stereocontrolled preparations of 2,6-cis- and 2,6-trans-substituted tetrahydropyrans have been devised. These studies have explored methodology for asymmetric induction in S-E' reactions using chiral 1,3,2-diazaborolidine controllers. Reactions with aldehydes at -78 degrees C yield nonracemic 1,5-diols for chemoselective internal backside displacements. This concept is developed as a flexible and reliable strategy in studies toward leucascandrolide A macrolactone 2 via the sequential applications of S-E' reactions leading to the C-1-C-9 aldehyde 14, and the bis-tetrahydropyran 59, respectively. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2011.05.020
• 作为产物：
  描述：

  (2R)-2,3-dimethyl-3-buten-1-ol 在 吡啶 、 4-二甲氨基吡啶 、 lithium bromide 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 32.0h， 生成 (2R)-1-bromo-2,3-dimethyl-3-butene
  参考文献：
  名称：

  Studies for the enantiocontrolled preparation of substituted tetrahydropyrans: applications for the synthesis of leucascandrolide A macrolactone

  摘要：

  Strategies for the stereocontrolled preparations of 2,6-cis- and 2,6-trans-substituted tetrahydropyrans have been devised. These studies have explored methodology for asymmetric induction in S-E' reactions using chiral 1,3,2-diazaborolidine controllers. Reactions with aldehydes at -78 degrees C yield nonracemic 1,5-diols for chemoselective internal backside displacements. This concept is developed as a flexible and reliable strategy in studies toward leucascandrolide A macrolactone 2 via the sequential applications of S-E' reactions leading to the C-1-C-9 aldehyde 14, and the bis-tetrahydropyran 59, respectively. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2011.05.020

文献信息

• Formal Synthesis of Leucascandrolide A
  作者：David R. Williams、Scott V. Plummer、Samarjit Patnaik

  DOI：10.1002/anie.200351817

  日期：2003.8.25
• Studies for the enantiocontrolled preparation of substituted tetrahydropyrans: applications for the synthesis of leucascandrolide A macrolactone
  作者：David R. Williams、Scott V. Plummer、Samarjit Patnaik

  DOI：10.1016/j.tet.2011.05.020

  日期：2011.7

  Strategies for the stereocontrolled preparations of 2,6-cis- and 2,6-trans-substituted tetrahydropyrans have been devised. These studies have explored methodology for asymmetric induction in S-E' reactions using chiral 1,3,2-diazaborolidine controllers. Reactions with aldehydes at -78 degrees C yield nonracemic 1,5-diols for chemoselective internal backside displacements. This concept is developed as a flexible and reliable strategy in studies toward leucascandrolide A macrolactone 2 via the sequential applications of S-E' reactions leading to the C-1-C-9 aldehyde 14, and the bis-tetrahydropyran 59, respectively. (C) 2011 Elsevier Ltd. All rights reserved.