(E)-1-(buta-1,3-dienyl)-2,3-dimethoxybenzene | 1191125-26-4

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (E)-1-(buta-1,3-dienyl)-2,3-dimethoxybenzene
• 英文别名: 1-[(1E)-buta-1,3-dienyl]-2,3-dimethoxybenzene
• CAS: 1191125-26-4
• 化学式: C₁₂H₁₄O₂
• 分子量: 190.242
• InChiKey: XPCUJUMCHOVSGJ-FNORWQNLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  14
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.17
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  1-(2,3-dimethoxyphenyl)but-3-yn-1-ol 在 三乙基硅烷 、 potassium superoxide 、 三氟化硼乙醚 作用下， 以 二氯甲烷 、 二甲基亚砜 为溶剂， 反应 6.0h， 生成 (Z)-1-(buta-1,3-dienyl)-2,3-dimethoxybenzene 、 (E)-1-(buta-1,3-dienyl)-2,3-dimethoxybenzene
  参考文献：
  名称：

  Superoxide mediated isomerization of 4-aryl-but-1-ynes to 1-aryl-1,3-butadienes

  摘要：

  A new role of superoxide ion in the isomerization of homobenzylic acetylenes leading to 1-aryl-1,3-butadienes is reported. The unconventional reagent 1(02 is found to be superior in performing this kind of isomerization over other the commonly used bases. For substrates containing arene moiety and triple bond connected through more than two methylene groups, and for propargylcyclohexanol the reagent selectively effected migration of the triple bond. Reactivity of 1(02 towards the substrates having disubstitution at benzylic position varied depending on the nature of the substitution, alkyl-substitution lead to isomerization to give mixture of allene (an intermediate in the isomerization of acetylene to 1,3-butadiene) and triple bond migration product; whereas phenyl-substituted compound gave 1,3-diene. The utility of the methodology was demonstrated through a Diels-Alder reaction of one of the dienes obtained by the isomerization with suitable dienophiles. (C) 2015 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2015.07.075

文献信息

• Aqueous Wittig reactions of semi-stabilized ylides. A straightforward synthesis of 1,3-dienes and 1,3,5-trienes
  作者：James McNulty、Priyabrata Das

  DOI：10.1016/j.tetlet.2009.07.133

  日期：2009.10

  A direct synthesis of 1,3-dienes and 1,3,5-trienes from the reaction of semi-stabilized ylides and a range of saturated and unsaturated aldehydes is reported in water as solvent, employing sodium hydroxide as base. The water-soluble phosphine oxide side product is removed simply by aqueous partitioning of the organic products.

  据报道，以氢氧化钠为碱，在水为溶剂的情况下，由半稳定化的烷基化物与一定范围的饱和和不饱和醛的反应直接合成了1,3-二烯和1,3,5-三烯。水溶性氧化膦副产物可通过有机产物的水分配简单地除去。