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Table 1 Times and yields of halogenated pyridinium hydrazones 29 under conventional and ultrasound

From: Novel amphiphilic pyridinium ionic liquids-supported Schiff bases: ultrasound assisted synthesis, molecular docking and anticancer evaluation

Compound no R Conventional method CM Ultrasound method US
Time (h) Yield (%) Time (h) Yield (%)
2 C8H17 72 84 10 92
3 C9H19 72 90 10 96
4 C10H21 72 88 12 92
5 C11H23 72 92 12 98
6 C12H25 72 88 12 92
7 C14H29 72 85 12 92
8 C16H33 72 89 12 94
9 C18H37 72 83 12 96