Magnesium Bromide and Magnesium Chloride Hexahydrate Catalyzed One-Pot Synthesis of Dihydropyrimidines<i>via</i>Biginelli Reaction under Solvent-Free Conditions
作者:Şirin Gülten
DOI:10.1002/jhet.980
日期:2013.3
three‐component Biginelli reaction from the corresponding aromatic aldehydes (5‐methyl‐2‐thiophenecarboxaldehyde and 2‐chloro‐5‐nitrobenzaldehyde), β‐keto esters (ethylacetoacetate, allylacetoacetate, and t‐butylacetoacetate), and urea/thiourea in the presence of catalytic amount of magnesiumbromide and magnesiumchloridehexahydrate as nontoxic, inexpensive, and easily available catalysts under solvent‐free conditions