Novel Biginelli-like three-component cyclocondensation reaction: efficient synthesis of 5-unsubstituted 3,4-dihydropyrimidin-2(1H)-ones
作者:Zong-Ting Wang、Li-Wen Xu、Chun-Gu Xia、Han-Qing Wang
DOI:10.1016/j.tetlet.2004.08.107
日期:2004.10
Iron (III) catalyzed the three-component Biginelli-like cyclocondensation reaction efficiently in acetonitrile to afford the corresponding 5-unsubstituted 3,4-dihydropyrimidin-2-(1H)-ones in high yields. The first Biginelli-like reactions of urea, aldehydes and ketones were furnished important new 3,4-dihydropyrimidin-2-(1H)-ones derivatives suitable for further study.
FeCl3∙6H2O/TMSBr-Catalyzed Rapid Synthesis of Dihydropyrimidinones and Dihydropyrimidinethiones under Microwave Irradiation
作者:Fei Zhao、Xiuwen Jia、Pinyi Li、Jingwei Zhao、Jun Huang、Honglian Li、Lin Li
DOI:10.3390/molecules22091503
日期:——
dihydropyrimidinethiones through FeCl3∙6H2O/TMSBr-catalyzed three-component cyclocondensation undermicrowaveirradiation. This approach features high yields, broad substrate scope, short reaction time, mild reaction conditions, operational simplicity and easy work-up, thus affording a versatile method for the synthesis of dihydropyrimidinones and dihydropyrimidinethiones.