Comp

No

R

MW

Mp (˚C)

Yield

(%)

Found (Calc) (%)

C

H

N

4a

F

276.69

154 - 156

68

60.70 (60.77)

3.59 (3.64)

10.05 (10.12)

4b

Cl

293.02

150 - 152

66

57.29 (57.36)

3.39 (3.44)

9.49 (9.56)

4c

Br

335.97

160 - 163

64

49.74 (49.81)

2.94 (2.99)

8.23 (8.30)

4d

CF₃

326.70

168 - 170

70

55.08 (55.15)

3.04 (3.09)

8.50 (8.57)

4e

OCH₃

288.73

162 - 164

74

62.33 (62.40)

4.49 (4.54)

9.63 (9.70)