Due to the desire of all researchers to develop methods for preparing heterocyclic compounds because of their wide applications in various fields and also due to their eagerness to invent efficient , fast , clean , environmentally friendly and economical methods .Therefore, green chemistry methods were adopted, represented by grinding technique to prepare a distinctive type of heterocyclic compounds represented by N-phenyl-3-(piperonayl-5ˋ-yl)-4-cyno-5-amino pyrazole through smooth one-pot multicomponent reaction among piperonal, malononitrile and phenyl hydrazine hydrochloride for (4-5min.) with yield enhancement. This pyrazole was converted to it’s Schiff base derivatives (2-5) through it’s reaction with substituted benzaldehyde in acid media, then these Schiff base were underwent Diels-Alder reaction with diarylidene hydrazine (6-8) via another green chemistry technique represented by microwave irradiation at power (700 watt) for (5-10 min.) to afford 1,2,4- triazine derivatives (9-20). All prepared compounds were illustrated by the available physical and spectral methods .

10.14704/nq.2022.20.9.NQ44418