Ionic liquid promoted interrupted Feist–Benary reaction with high diastereoselectivity
摘要:
A basic ionic liquid, 1-butyl-3-methylimidazolium hydroxide promotes the interrupted Feist-Eenary reaction at room temperature under organic solvent-ftee conditions to produce a variety of substituted hydFOxydihydrofurans. The hydroxydihydrofurans are converted to furans (Feist-Benary products) using the ionic liquid, 1-methyl-3-pentylimidazolium bromide at 70-75 degrees C. The reactions are very clean, high yielding and highly stereoselective. (c) 2008 Elsevier Ltd. All rights reserved.
Ionic liquid promoted interrupted Feist–Benary reaction with high diastereoselectivity
摘要:
A basic ionic liquid, 1-butyl-3-methylimidazolium hydroxide promotes the interrupted Feist-Eenary reaction at room temperature under organic solvent-ftee conditions to produce a variety of substituted hydFOxydihydrofurans. The hydroxydihydrofurans are converted to furans (Feist-Benary products) using the ionic liquid, 1-methyl-3-pentylimidazolium bromide at 70-75 degrees C. The reactions are very clean, high yielding and highly stereoselective. (c) 2008 Elsevier Ltd. All rights reserved.
Synthesis of chiral dihydrofuran compounds by thiourea derivatives-catalyzed “interrupted” Feist-Bénary reaction
作者:Hui Chen、Ru Jiang、Qiao Feng Wang、Xiao Li Sun、Jing Luo、Sheng Yong Zhang
DOI:10.1016/j.cclet.2009.10.012
日期:2010.2
study, six thiourea derivatives of cinchona alkaloids with 9-nat or 9-epi-configuration were synthesized. After characterized the structures, we adopted them to the asymmetric “interrupted” Feist-Bénary (IFB) reaction of α-haloketones with β-dicarbonyl compounds, to give optically active dihydrofurans. Various thiourea derivatives as organocatalysts were examined. The corresponding chiral hydroxyl dihydrofurans
Ionic liquid promoted interrupted Feist–Benary reaction with high diastereoselectivity
作者:Brindaban C. Ranu、Laksmikanta Adak、Subhash Banerjee
DOI:10.1016/j.tetlet.2008.05.083
日期:2008.7
A basic ionic liquid, 1-butyl-3-methylimidazolium hydroxide promotes the interrupted Feist-Eenary reaction at room temperature under organic solvent-ftee conditions to produce a variety of substituted hydFOxydihydrofurans. The hydroxydihydrofurans are converted to furans (Feist-Benary products) using the ionic liquid, 1-methyl-3-pentylimidazolium bromide at 70-75 degrees C. The reactions are very clean, high yielding and highly stereoselective. (c) 2008 Elsevier Ltd. All rights reserved.