Synthesis of chalcones, pyrazolines, amino pyrimidines and pyrimidinethiones as antibacterial agents

1580-15842-Phenylamino-4-(3'-fluorophenylamino)-6-(4'-acetylphenyl-amino)-s-triazine 5 on treatment with aromatic aldehydes yields chalcones 6a-f, which on cyclization with hydrazine hydrate, guanidine nitrate and thiourea give the corresponding pyrazolines 7a-f, amino pyrimidines 8a-f and pyrimidinethiones 9a-f, respectively. The synthesized compounds are screened for their antibacterial activity