(E)-3-(2-methoxy-1-methyl-1-propen-1-yl)inden-1-one | 124583-38-6

• 分子结构分类: 有机化合物 - 苯类化合物 - 茚和异茚
• 英文名称: (E)-3-(2-methoxy-1-methyl-1-propen-1-yl)inden-1-one
• 英文别名: 3-[(E)-2-methoxy-1-methyl-prop-1-enyl]-inden-1-one；3-[(E)-3-methoxybut-2-en-2-yl]inden-1-one
• CAS: 124583-38-6
• 化学式: C₁₄H₁₄O₂
• 分子量: 214.264
• InChiKey: MDHNAFZRFATZDI-MDZDMXLPSA-N

物化性质

• 沸点：
  369.1±42.0 °C(Predicted)
• 密度：
  1.130±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  16
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.21
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  邻溴苯甲酸甲酯 在 bis-triphenylphosphine-palladium(II) chloride 、 copper(l) iodide 、 Rh2[(+/-)-mandelate]4 、 sodium hydride 、 三乙胺 作用下， 以 甲苯 、 苯 为溶剂， 反应 42.83h， 生成 (E)-3-(2-methoxy-1-methyl-1-propen-1-yl)inden-1-one
  参考文献：
  名称：

  Rhodium carbenoid mediated cyclizations of o-alkynyl-substituted .alpha.-diazoacetophenones

  摘要：

  o-Alkynyl-substituted alpha-diazoacetophenones undergo facile cyclization to indenone derivatives upon treatment with catalytic quantities of Rh(II) carboxylates. A variety of structural influences were encountered by varying the nature of the substituent group attached to the alkyne carbon atom. The cyclization reaction involves addition of a rhodium stabilized carbenoid onto the acetylenic pi-bond to generate a vinyl carbenoid. The vinyl carbenoid was found to undergo both CH and CC migration as well as delta-CH insertion into the alkyl backbone. Different catalysts were shown to result in significant variation in the product ratios for these reactions. Treatment of o-(5-(allyloxy)-1-pentynyl)-alpha-diazoacetophenone with rhodium(II) mandelate afforded 2-(2-propen-1-yl)-2-(1-oxo-1H-indenyl)-2,3,4,5-tetrahydrofuran in high yield. The formation of this compound involves initial formation of a vinyl carbenoid which reacts with the neighboring oxygen atom to give an oxonium ylide which subsequently undergoes a 2,3-sigmatropic rearrangement. When 2-ethynyl-alpha-diazoacetophenone is used, only products derived from 6-endo closure are observed. Substituted o-alkynyl alpha-diazoacetophenones give products derived from 5-exo cyclization. The mode of ring closure is controlled by both steric and electronic factors.

  DOI：

  10.1021/jo00044a032

文献信息

• Generation of vinylcarbenes by the intramolecular addition of .alpha.-diazo ketones to acetylenes
  作者：Albert Padwa、Ugo Chiacchio、Yves Garreau、Jamal M. Kassir、Keith E. Krumpe、Allen M. Schoffstall

  DOI：10.1021/jo00289a006

  日期：1990.1
• PADWA, ALBERT;CHIACCHIO, UGO;GARREAU, YVES;KASSIR, JAMAL M.;KRUMPE, KEITH+, J. ORG. CHEM., 90,(1990) N, C. 414-416
  作者：PADWA, ALBERT、CHIACCHIO, UGO、GARREAU, YVES、KASSIR, JAMAL M.、KRUMPE, KEITH+

  DOI：——

  日期：——
• Rhodium carbenoid mediated cyclizations of o-alkynyl-substituted .alpha.-diazoacetophenones
  作者：Albert Padwa、Keith E. Krumpe、Jamal M. Kassir

  DOI：10.1021/jo00044a032

  日期：1992.8

  o-Alkynyl-substituted alpha-diazoacetophenones undergo facile cyclization to indenone derivatives upon treatment with catalytic quantities of Rh(II) carboxylates. A variety of structural influences were encountered by varying the nature of the substituent group attached to the alkyne carbon atom. The cyclization reaction involves addition of a rhodium stabilized carbenoid onto the acetylenic pi-bond to generate a vinyl carbenoid. The vinyl carbenoid was found to undergo both CH and CC migration as well as delta-CH insertion into the alkyl backbone. Different catalysts were shown to result in significant variation in the product ratios for these reactions. Treatment of o-(5-(allyloxy)-1-pentynyl)-alpha-diazoacetophenone with rhodium(II) mandelate afforded 2-(2-propen-1-yl)-2-(1-oxo-1H-indenyl)-2,3,4,5-tetrahydrofuran in high yield. The formation of this compound involves initial formation of a vinyl carbenoid which reacts with the neighboring oxygen atom to give an oxonium ylide which subsequently undergoes a 2,3-sigmatropic rearrangement. When 2-ethynyl-alpha-diazoacetophenone is used, only products derived from 6-endo closure are observed. Substituted o-alkynyl alpha-diazoacetophenones give products derived from 5-exo cyclization. The mode of ring closure is controlled by both steric and electronic factors.