Iodotrimethylsilane-Accelerated One-Pot Synthesis of 5-Unsubstituted 3,4-Dihydropyrimidin-2(1H)-ones: A Novel Procedure for theBiginelli-Like Cyclocondensation Reaction at Room Temperature
作者:Gowravaram Sabitha、Kusuma B. Reddy、Rangavajjula Srinivas、Jillu S. Yadav
DOI:10.1002/hlca.200590242
日期:2005.11
A novel Biginelli-like cyclocondensation reaction is efficiently catalyzed by iodotrimethylsilane (Me3SiI) in MeCN. The reaction proceeds at room temperature by a three-component one-pot condensation of ketones with aldehydes and urea to afford 5-unsubstituted 3,4-dihydropyrimidin-2(1H)-ones in good yields (Scheme 1 and Table).
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.