(Z)-3-methyl-5-pentylidene-2(5H)-furanone

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氢呋喃
• 英文名称: (Z)-3-methyl-5-pentylidene-2(5H)-furanone
• 英文别名: (5Z)-3-methyl-5-pentylidenefuran-2-one
• 化学式: C₁₀H₁₄O₂
• 分子量: 166.22
• InChiKey: VLZNPQOIRRHUOC-TWGQIWQCSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.56
• 重原子数：
  12.0
• 可旋转键数：
  3.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  26.3
• 氢给体数：
  0.0
• 氢受体数：
  2.0

反应信息

• 作为产物：
  描述：

  chlorozinc(1+),hex-1-yne 在 二(氰基苯)二氯化钯 、 四(三苯基膦)钯 、 trans-di(μ-acetato)bis[o-(di-o-tolylphosphino)benzyl]dipalladium(II) N-甲基吡咯烷酮 、 lithium hydroxide 、 copper(l) iodide 、 三苯胂 作用下， 以 四氢呋喃 、 甲苯 为溶剂， 反应 23.0h， 生成 (Z)-3-methyl-5-pentylidene-2(5H)-furanone
  参考文献：
  名称：

  A novel protocol for the stereoselective synthesis of variously substituted (Z)-5-ylidene-5H-furan-2-ones

  摘要：

  The Pd(II)- or Ag(I)-catalyzed lactonization of easily available (E)-4-(1-alkynyl)-2-bromopropenoic acids provides (Z)-3-bromo-5-ylidene-5H-furan-2-ones, 9. These compounds, which represent an unpreviously reported class of (Z)-alkylidenebutenolides, are able to undergo Pd-catalyzed cross-coupling reactions with arylzinc halides, tetraalkylstannanes or alkenylstannanes to provide the corresponding 3-substituted (Z)-5-ylideng-5H-furan-2-ones, 1. The new procedure for the preparation of compounds 1 has been employed in a new synthesis of the butter flavour component bovolide. (C) 1998 Elsevier science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4039(98)00322-0

文献信息

• Synthesis of 4-[(<i>E</i>)-1-Alkenyl]-2-hydroxybutanolides and (<i>Z</i>)-4-Alkylidene-2-butenolides through Cycloadditions Using a Phosphorus-Functionalized Nitrile Oxide
  作者：Shuji Kanemasa、Norihiko Nakagawa、Hiroyuki Suga、Otohiko Tsuge

  DOI：10.1246/bcsj.62.171

  日期：1989.1

  A sequence of cycloadditions of (diethoxyphosphinyl)acetonitrile oxide with α,β-unsaturated esters, the Raney Ni reduction of the resulting cycloadducts, the Horner–Emmons olefination, and the carbonyl reduction with sodium borohydride leads to 5-[(E)-1-alkenyl]-3-hydroxy-4,5-dihydro-2(3H)-furanones which can be converted into (Z)-5-alkylidene-2(5H)-furanones in two steps.

  (二乙氧基膦基)乙腈氧化物与α,β-不饱和酯的一系列环加成，所得环加合物的雷尼镍还原，霍纳-埃蒙斯烯化，以及硼氢化钠的羰基还原得到5-[(E)-1 [-链烯基]-3-羟基-4,5-二氢-2(3H)-呋喃酮，其可分两步转化为(Z)-5-亚烷基-2(5H)-呋喃酮。
• KANEMASA, SHUJI;NAKAGAWA, NORIHIKO;SUGA, HIROYUKI;TSUGE, OTOHIKO, BULL. CHEM. SOC. JAP., 62,(1989) N, C. 171-179
  作者：KANEMASA, SHUJI、NAKAGAWA, NORIHIKO、SUGA, HIROYUKI、TSUGE, OTOHIKO

  DOI：——

  日期：——
• A novel protocol for the stereoselective synthesis of variously substituted (Z)-5-ylidene-5H-furan-2-ones
  作者：Renzo Rossi、Fabio Bellina、Luisa Mannina

  DOI：10.1016/s0040-4039(98)00322-0

  日期：1998.5

  The Pd(II)- or Ag(I)-catalyzed lactonization of easily available (E)-4-(1-alkynyl)-2-bromopropenoic acids provides (Z)-3-bromo-5-ylidene-5H-furan-2-ones, 9. These compounds, which represent an unpreviously reported class of (Z)-alkylidenebutenolides, are able to undergo Pd-catalyzed cross-coupling reactions with arylzinc halides, tetraalkylstannanes or alkenylstannanes to provide the corresponding 3-substituted (Z)-5-ylideng-5H-furan-2-ones, 1. The new procedure for the preparation of compounds 1 has been employed in a new synthesis of the butter flavour component bovolide. (C) 1998 Elsevier science Ltd. All rights reserved.