A simple, efficient, and environmentally benign protocol for the synthesis of 3,4,5-substituted furan-2(5H)-ones has been achieved using extract of watermelon as a natural catalyst. We found, for the first time, that the extract of watermelon could effectively catalyze The condensation reaction of aldehydes, amines, and dialkyl acetylenedicarboxylates to 3,4,5-substituted furan-2(5H)-ones in excellent
Application of Silica Gel-supported Polyphosphoric Acid (PPA/SiO<sub>2</sub>) as a Reusable Solid Acid Catalyst for One-Pot Multi-Component Synthesis of 3,4,5-substituted furan-2(5H)-ones
作者:Razieh Doostmohammadi、Nourallah Hazeri
DOI:10.2174/1570178611310030010
日期:2013.4.1
3,4,5-substituted furan-2(5H)-ones were One-Pot Multi-Component synthesized by the reaction of aldehydes,
amines and dialkyl acetylenedicarboxylates using silica gel-supported polyphosphoric acid (PPA/SiO2) at room temperature.
This reaction provides a convenient and efficient synthetic method of furan-2(5H)-one derivatives, and also reusability
of catalyst.
Abstract The three-component condensation reaction of aldehydes, amines,and dialkyl acetylenedicarboxylates was conducted, leading to the production of 3,4,5-substituted furan-2(5H)-ones. This reaction is performed in the presence of acetic acid as a cheap and readily available catalyst at room temperature. Graphical Abstract
Sonosynthesis of furan-2(5H)-ones using nanosilica-tethered polyhedral oligomeric silsesquioxanes
作者:Hossein Shahbazi-Alavi、Sheida Khojasteh-Khosro、Javad Safaei-Ghomi、Seyed Hadi Nazemzadeh
DOI:10.1007/s13738-019-01711-5
日期:2019.11
AbstractAn easy and rapid method for the synthesis of 3,4,5-substituted furan-2 (5H)-ones has been achieved through a three-component reaction of aniline, dialkyl acetylenedicarboxylate, and aromatic aldehydes using nanosilica-tethered polyhedral oligomeric silsesquioxanes with eight branches of 3-aminopropyltriethoxysilane as catalyst under ultrasonic irradiations. We reported a class of organic–inorganic
approach towards their synthesis via a mild, inexpensive, and green photochemical protocol, where dual analyte thioureas, 1 (1H-benzo[d]imidazol-2-yl)-3-(4-nitrophenyl)thiourea (BINPT) and 1-(4-methylbenzo[d]thiazol-2-yl)-3-(4-nitrophenyl)thiourea (MBNPT), are utilized as the catalyst and white LEDs as the light source via electron donor–acceptor (EDA) complexes. A variety of diethyl 2-(phenylamino)fumarates
Furan-2-one 衍生物在化学中对于合成和生物目的都非常重要。在此,我们报告了一种通过温和、廉价和绿色光化学方案合成它们的新方法,其中双分析物硫脲,1(1 H-苯并[ d ]咪唑-2-基)-3-(4-硝基苯基)硫脲(BINPT) 和 1-(4-methylbenzo[ d ] thiazol -2-yl)-3-(4-nitrophenyl)thiourea (MBNPT) 作为催化剂和白光 LEDs 作为光源,通过电子供体-受体(EDA)复合物。各种 2-(苯基氨基) 富马酸二乙酯和醛以良好到高产率转化为 3,4,5-三取代呋喃-2-酮。使用 DFT 计算进一步研究选定的化合物,以建立有关化合物几何参数的清晰图片。