AbstractA facile parallel synthesis of 3,5-diaryl-2,6-dicyanoanilines via three-component reaction of aryl aldehydes, acetophenone derivatives, and malononitrile under thermal green solvent-free conditions in the presence of potassium carbonate and also potassium bicarbonate without using any hazardous materials is described. Graphical abstract
A facile and efficient synthesis of polysubstituted benzenes has been developed via sequential Michael addition, Knoevenagel condensation and nucleophilic cyclization reactions of readily available chalcones with active methylene compounds in guanidinium ionic liquids.
SYNTHESIS OF HIGHLY SUBSTITUTED 1,6-NAPHTHYRIDINES: A REINVESTIGATION
作者:Eva Veverková、Marika Nosková、Štefan Toma
DOI:10.1081/scc-120006476
日期:2002.1
ABSTRACT A reinvestigation of the recently described method of synthesis of highly substituted 1,6-naphthyridines was carried out. It was found out that the reaction of chalcones with malononitrile catalysed by pyrrolidine afforded the mixture of four products both when thermal as well as microwave heating was used. The claimed[1] 1,6-naphthyridines formation were exceptions.
AbstractCeO2 nanoparticles as an efficientcatalyst have been used for the preparation of 2-amino-4,6-diarylbenzene-1,3-dicarbonitriles by the multi-component condensation reaction of aldehydes, acetophenones, and malononitrile in good to excellent yields, short reaction times, mild reaction conditions, and the employment of a cost-effective catalyst. Graphical abstract
An Efficient and Facile Synthesis of 2-Amino-4,6-diarylbenzene-1,3-dicarbonitrile and 1,2-Dihydro-2-oxo-4,6-diarylpyridine-3-carbonitrile under Solvent-free Conditions
作者:Liangce Rong、Xiaoyue Li、Haiying Wang、Daqing Shi、Shujiang Tu
DOI:10.1246/cl.2006.1314
日期:2006.11
A one-pot three-component condensation of aromatic aldehyde, aromatic ketone, and malononitrile leading to an efficient synthesis of 2-amino-4,6-diarylbenzene-1,3-dicarbonitrile and 1,2-dihydro-2-oxo-4,6-diarylpyridine-3-carbonitrile has been carried out in a mortar just by grinding or heating under solvent-free conditions. Compared with the classical reaction conditions, these new synthetic methods have the advantages of excellent yields, shorter reaction time, and mild reaction conditions.