Table 3 Physical and analytical data for the newly synthesized pyridinium hydrazones 2–33

2

C₈H₁₇

I

104–105

222, 330, 430

+

3

C₉H₁₉

I

91–93

220, 332, 432

+

4

C₁₀H₂₁

I

110–112

220, 332, 430

+

5

C₁₁H₂₃

I

82–83

220, 332, 430

+

6

C₁₂H₂₅

I

72–73

220, 330, 430

+

7

C₁₄H₂₉

I

86–88

220, 332, 430

+

8

C₁₆H₃₃

I

78–80

220, 332, 430

+

9

C₁₈H₃₇

I

98–99

220, 332, 430

+

10

C₈H₁₇

PF₆

Yellow crystals

64–65

220, 330, 430

+

11

C₈H₁₇

BF₄

Yellow crystals

80–82

220, 332, 430

+

12

C₈H₁₇

COOCF₃

Yellow crystals

74–76

220, 332, 430

+

13

C₉H₁₉

PF₆

Yellow crystals

69–70

220, 330, 428

+

14

C₉H₁₉

BF₄

Yellow crystals

88–90

222, 328, 426

+

15

C₉H₁₉

COOCF₃

Yellow crystals

96–98

222, 332, 424

+

16

C₁₀H₂₁

PF₆

Yellow syrup

220, 330, 428

+

17

C₁₀H₂₁

BF₄

Colorless syrup

220, 330, 428

+

18

C₁₀H₂₁

COOCF₃

Yellow syrup

222, 334, 432

+

19

C₁₁H₂₃

PF₆

Yellow syrup

220, 330, 428

+

20

C₁₁H₂₃

BF₄

Yellow syrup

220, 330, 426

+

21

C₁₁H₂₃

COOCF₃

Colorless syrup

222, 332, 430

+

22

C₁₂H₂₅

PF₆

Yellow syrup

222, 330, 430

+

23

C₁₂H₂₅

BF₄

Yellow syrup

218, 332, 430

+

24

C₁₂H₂₅

COOCF₃

Colorless syrup

220, 336, 428

+

25

C₁₄H₂₉

PF₆

Yellow syrup

220, 332, 428

+

26

C₁₄H₂₉

BF₄

Yellow syrup

220, 336, 430

+

27

C₁₄H₂₉

COOCF₃

Colorless syrup

220, 330, 428

+

28

C₁₆H₃₃

PF₆

Yellow syrup

220, 338, 432

+

29

C₁₆H₃₃

BF₄

Yellow syrup

218, 332, 428

+

30

C₁₆H₃₃

COOCF₃

Colorless syrup

220, 334, 430

+

31

C₁₈H₃₇

PF₆

Yellow syrup

220, 330, 428

+

32

C₁₈H₃₇

BF₄

Yellow syrup

220, 330, 432

+

33

C₁₈H₃₇

COOCF₃

Colorless syrup

220, 332, 430

+