3-acetyl-2-methyl-4-phenylfuran | 52403-77-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 3-acetyl-2-methyl-4-phenylfuran
• 英文别名: 1-(2-Methyl-4-phenylfuran-3-YL)ethanone
• CAS: 52403-77-7
• 化学式: C₁₃H₁₂O₂
• 分子量: 200.237
• InChiKey: ZIZFARLXOVDVNE-UHFFFAOYSA-N

物化性质

• 沸点：
  316.6±42.0 °C(Predicted)
• 密度：
  1.080±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.15
• 拓扑面积：
  30.2
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  (+/-)-3-(2-nitro-1-phenylethyl)pentane-2,4-dione 在 氟化铵 、 三乙胺 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 193.5h， 生成 3-acetyl-2-methyl-4-phenylfuran
  参考文献：
  名称：

  摘要：

  Silylation of gamma-nitro ketones of the general formula (RCOCH)-C-1(R-2)CH(R-3)CH(R-4)NO2 proceeded stereoselectively to give 2-[N,N-bis(trimethylsilyloxy)amino]-2,3-dihydrofurans, conjugated enoximes, silylation products of the carbonyl group or both functional groups, or N, N-bis(trimethylsilyloxy)enamine depending on the nature and positions of the substituents in the carbon skeleton. Dihydrofuran derivatives are formed for R-1 = Ar or cyclo-C3H5. Enoximes are generated as the silylation products of the starting ketones with enhanced P-proton mobility (R-3 CO2Me or 4-NO2C6H4). The presence of an alkyl group at the carbonyl function (R-1 = Alk) is favorable for the formation of enoximes. Finally, the introduction of a substituent at the a position with respect to the nitro group (R-4 = Me, CO2Me, or Ph) leads to the formation of silyl enolates. Under the action of NH4F in MeOH, dihydrofurans can be transformed into substituted furans in moderate yields.

  DOI：

  10.1023/a:1023958806825

文献信息

• Reactions of Diphenyl(phenylethynyl)selenonium Salts with Active Methylene Compounds and Amides:  First Isolation of Oxyselenuranes [10-Se-4(C3O)] as a Reaction Intermediate
  作者：Tadashi Kataoka、Shin-ichi Watanabe、Keiichirou Yamamoto、Mitsuhiro Yoshimatsu、Genzoh Tanabe、Osamu Muraoka

  DOI：10.1021/jo980999x

  日期：1998.9.1

  The reaction of the diphenyl(phenylethynyl)selenonium triflate 1a with active methylene compounds 5 and t-BuOK in THF gave furan derivatives 6. The [10-Se-4(C3O)] selenuranes 8a and 8b could be isolated from the reactions with benzoylacetonitrile 5f and with 1,3-indandione 5g, respectively, as reaction intermediates. The structures of the selenuranes 8 were elucidated by X-ray crystallography and Se-77 high-resolution solid-state NMR spectroscopy. The selenuranes 8 underwent ligand coupling on standing at room temperature or refluxing in chloroform and gave the furan derivatives 6 and the ring-opened product 9. Similarly, the reaction of 1a with benzamide 13a and pivalamide 13d in the presence of NaH in THF afforded oxazole derivatives 14.
• ——
  作者：K. P. Birin

  DOI：10.1023/a:1023958806825

  日期：——

  Silylation of gamma-nitro ketones of the general formula (RCOCH)-C-1(R-2)CH(R-3)CH(R-4)NO2 proceeded stereoselectively to give 2-[N,N-bis(trimethylsilyloxy)amino]-2,3-dihydrofurans, conjugated enoximes, silylation products of the carbonyl group or both functional groups, or N, N-bis(trimethylsilyloxy)enamine depending on the nature and positions of the substituents in the carbon skeleton. Dihydrofuran derivatives are formed for R-1 = Ar or cyclo-C3H5. Enoximes are generated as the silylation products of the starting ketones with enhanced P-proton mobility (R-3 CO2Me or 4-NO2C6H4). The presence of an alkyl group at the carbonyl function (R-1 = Alk) is favorable for the formation of enoximes. Finally, the introduction of a substituent at the a position with respect to the nitro group (R-4 = Me, CO2Me, or Ph) leads to the formation of silyl enolates. Under the action of NH4F in MeOH, dihydrofurans can be transformed into substituted furans in moderate yields.