Efficient synthesis of dihydropyrimidinones via a three-component Biginelli-type reaction of urea, alkylaldehyde and arylaldehyde
作者:Haijun Qu、Xuejian Li、Fan Mo、Xufeng Lin
DOI:10.3762/bjoc.9.320
日期:——
A one-potthree-componentsynthesis of dihydropyrimidinones via a molecular iodine-catalyzed tandemreaction of simple readily available mono-substituted urea, alkylaldehyde, and arylaldehyde has been developed. The reaction proceeds with high chemo- and regioselectivity to give highly diverse dihydropyrimidinones in reasonable yields under mild reaction conditions. Moreover, the first catalytic enantioselective
A chemo- and regio-selective three-component dihydropyrimidinone synthesis
作者:Chris D. Bailey、Chris E. Houlden、Gr?gory L. J. Bar、Guy C. Lloyd-Jones、Kevin I. Booker-Milburn
DOI:10.1039/b707361e
日期:——
A selective three-component coupling, involving co-condensation of aldehyde pairs with substituted ureas under Lewis acid catalysis, provides rapid access to highly functionalised dihydropyrimidinones; sulfamides react analogously.