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Sodium silicate with the formula of Na 2 SiO 3  was used for the three-component reaction of ketones, aldehydes and cyanoacetamide. The effect of Zn 2 SnO 4  nano-particles on the catalytic potential of Na 2 SiO 3  was investigated. The desired products synthesized by this method are 5-amino-7-aryl-2,4-dioxo-2,3,4,4a,7,7a,8,9,10,11-decahydro-1 H -benzo[ i ]quinazoline-6-carbonitriles, 5-amino-2,4-dioxo-7-aryl-1,2,3,4,4a,7,7a,8,9,10-decahydrocyclopenta[ i ]quinazoline-6-carbonitriles and 5-amino-2,4-dioxo-7-aryl-1,2,3,4,4a,7,7a,8,10,11-decahydrothiopyrano[3,4- i ]quinazoline-6-carbonitrile derivatives. This method has advantages of high yields, simple procedure, and easy work-up.

polycyclic aromatic compounds

The Effect of Zn 2 SnO 4  Nanoparticles on the Catalytic Activity Potential of Sodium Silicate in the Multi-Component Reaction of Ketones, Aldehydes and Cyanoacetamide