Research Article

Synthesis of 1,8-Naphthyridine Derivatives under Ultrasound Irradiation and Cytotoxic Activity against HepG2 Cell Lines

Table 2

Synthesis of 1,3,4-oxadiazole 6, 1,3,4-thiadiazole 8, and 1,2,4-triazole 9a–c derivatives under ultrasonic irradiation and conventional method.

CompoundUltrasonic irradiationConventional
Time (min.)Yield %Time (h)Yield %

645912476
72596893
81089273
9a1596483
9b1591377
9c1588369