苯甲醛 、 对羟基苯乙酮 在
MnO2 supported on multiwalled carbon nanocomposites 作用下,
以
neat (no solvent) 为溶剂,
反应 0.42h,
以87%的产率得到3,4-dihydro-4-(4-hydroxyphenyl)-6-phenylpyrimidin-2(1H)-one
参考文献:
名称:
MnO2–MWCNT nanocomposites as efficient catalyst in the synthesis of Biginelli-type compounds under microwave radiation
摘要:
A novel Biginelli-like cyclocondensation reaction is efficiently catalyzed by MnO2-CNT nanocomposites as a new catalyst under microwave irradiation and solvent-free conditions in excellent yields. The major advantages of the present method are high yields, short reaction times and solvent-free reaction conditions, reducing reaction steps and purification of products by non-chromatographic methods. The activity, recovery and reusability of the catalyst are found to be good. (C) 2013 Elsevier B.V. All rights reserved.
A novel protocol for solvent-free synthesis of 4,6-diaryl-3,4-dihydropyrimidine-2(1H)-ones catalyzed by metal oxide–MWCNTs nanocomposites
作者:Javad Safari、Soheila Gandomi-Ravandi
DOI:10.1016/j.molstruc.2014.05.012
日期:2014.9
cost and long lifetime. The application of solvent-free conditions and transition metal oxides decorated–MWCNTs (MOx–MWCNTs) nanocomposites as attractive, effective and reusable catalysts leads to the efficient synthesis of 4,6-diaryl-3,4-dihydropyrimidin-2-(1H)-ones. This recyclable heterogeneous catalyticsystem provides a simple strategy to generate a variety of pyrimidinones under solvent-free conditions
Fe<sub>3</sub>O<sub>4</sub>–CNTs nanocomposites: a novel and excellent catalyst in the synthesis of diarylpyrimidinones using grindstone chemistry
作者:Javad Safari、Soheila Gandomi-Ravandi
DOI:10.1039/c3ra47827k
日期:——
The Fe3O4–CNTs in conjunction with grindstone chemistry have been used in this report to synthesize 5-unsubstituted pyrimidinones.
本报告使用磁性纳米颗粒Fe3O4和碳纳米管(CNTs)结合研磨化学方法来合成5-未取代嘧啶酮。
Three-components condensation catalyzed by molecular iodine for the synthesis of 2,4,6-triarylpyridines and 5-unsubstituted-3,4-dihydropyrimidin-2(1H)-ones under solvent-free conditions
作者:Yi-Ming Ren、Chun Cai
DOI:10.1007/s00706-008-0011-8
日期:2009.1
One-pot, three-components synthesis of 2,4,6-triarylpyridines and 5-unsubstituted-3,4-dihydropyrimidin-2(1H)-ones was performed under solvent-free conditions using molecular iodine as the catalyst in moderate to good product yields.
New three-component cyclocondensation reaction: microwave-assisted one-pot synthesis of 5-unsubstituted-3,4-dihydropyrimidin-2(1H)-ones under solvent-free conditions
作者:Bing Liang、Xitian Wang、Jin-Xian Wang、Zhengyin Du
DOI:10.1016/j.tet.2006.12.062
日期:2007.2
Sixteen 5-unsubstituted-3,4-dihydropyrimidin-2(1H)-ones have been synthesized by microwave-assisted Biginelli reactions in a short and concise manner employing ZnI2 as a catalyst under solvent-free conditions. All products were identified by IR, NMR, elemental analysis and HRMS. The advantages of this novel protocol include the excellent yield, operational simplicity, short time and the avoidance of the use of organic solvents and expensive catalysts. (c) 2007 Elsevier Ltd. All rights reserved.
H<sub>6</sub>P<sub>2</sub>W<sub>18</sub>O<sub>62</sub>-18H<sub>2</sub>O, a Green and Reusable Catalyst for the Three-Component, One-Pot Synthesis of 4,6-Diarylpyrimidin-2(1<i>H</i>)-ones Under Solvent-Free Conditions
作者:Majid M. Heravi、Fatemeh Derikvand、Leila Ranjbar、Fatemeh F. Bamoharram