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Table 1 Times and yields of halogenated pyridinium hydrazones 2–9 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