A novel, hydrophilic and recyclable methoxypolyethylene glycol (PEG)-modulated s-triazine-based multifunctional Schiffbase/N,P-ligand L9 was prepared and used in Pd-catalyzed Heck-type carbonylative couplingreactions, affording diverse chalcone derivatives and 1,4-dicarbonyl esters in good yields.
Metal-free Synthesis of 2,4,6-Trisubstituted Pyrimidines using α,β.- Unsaturated Ketones and Benzamidine via Tandem Annulation-Oxidation Pathway
作者:Kamlesh S. Vadagaonkar、Hanuman P. Kalmode、Kaliyappan Murugan、Atul C. Chaskar
DOI:10.2174/1570178612666150425000023
日期:2015.7.8
A tandem metal-free synthesis of partly and fully substituted pyrimidines has been
accomplished from α,β-unsaturated ketones and benzamidine in presence of triethyl amine. The
reaction proceeds via [3+3] annulation-oxidation sequence and the protocol has been found successful
for the synthesis of a wide range of pyrimidine derivatives.