Table 1 Analytical and mass spectral data of 1-phenyl-3(5-bromothiophen-2-yl)-5-(substituted phenyl)-2-pyrazolines

1

H

C₂₀H₁₇BrN₂

365

85

152-153

365[M⁺], 367[M⁺²], 287, 285, 221, 209, 142, 79, 77, 68, 65, 41, 28, 14

2

4-Br

C₂₀H₁₆Br₂N₂

444

83

148-150

444[M⁺], 446[M⁺²], 448[M⁺⁴], 365, 363, 229, 222, 201, 155, 142, 77, 68, 41, 28, 14.

3

2-Cl

C₂₀H₁₇BrClN₂

399

75

142-144

399[M⁺], 401[M⁺²], 403[M⁺⁴], 363, 321, 319, 287, 225, 209, 142, 111, 77, 68, 65, 41, 28, 35, 14

4

4-Cl

C₂₀H₁₇BrClN₂

399

79

147-149

399[M⁺], 401[M⁺²], 403[M⁺⁴], 363, 321, 287, 225, 209, 142 77, 65, 41, 28, 14

5

3, 4-(OCH₃)₂

C₂₂H₂₁BrN₂O₂

425

85

140-142

425[M⁺], 427[M⁺²], 393, 363, 347, 287, 251, 142, 134, 107, 95, 78, 65, 41, 28, 14

6

4-I

C₂₀H₁₇BrIN₂

491

76

146-148

491[M⁺], 493[M⁺²], 495[M⁺⁴], 412, 363, 347, 287, 269, 229, 203, 142, 126, 77, 42, 28, 14

7

4-(OCH₃)

C₂₁H₁₉BrN₂O

395

85

128-130

395[M⁺], 397[M⁺²], 363, 317, 287, 210, 142, 105, 77, 41, 14

8

4-CH₃

C₂₁H₁₉BrN₂

379

83

148-149

379[M⁺], 381[M⁺²], 365, 287, 235, 210, 142, 91, 77, 41, 14