“…(1) 1,3-Diphenyl-2-pyrazoline, mp 151 °C,10 Xmax 355 nm, e 2.05 X 104 (isooctane); (2) l,3,5-triphenyl-2-pyrazoline, mp 136 °C,n Xmax 357 nm, e 2.03 X 104 (isooctane); (3) l-phenyl-3-mesityl-2-pyrazoline, mp 96 °C, Xmax 292.5 nm, ( 1.40 X 104 (isooctane); (4) l-phenyl-3-(2',4',6'-trimethoxyphenyl)-2-pyrazoline, mp 150 °C, Xmax 297.5 nm, e 1.58 X 104 (isooctane); (5) l-phenyl-3-(2',6/-dimethoxyphenyl)-2-pyrazoline, mp 131 °C, Xmax 295 nm, e 1.34 X 104 (isooctane); (6) l-(2,6-dimethylphenyl)-3-(2',5,-dimethoxyphenyl)-2-pyrazoline, mp 82 °C, Xmax 339.5 nm, e 1.73 X 104 (isooctane); (7) l-(2,6-dimethylphenyl)-3-(2',6'-dimethoxyphenyl)-2-pyrazoline, mp 117 °C, Xmax 285 nm, e 0.95 X 104 (isooctane); (8) l-phenyl-3-(4'-methoxyphenyl)-2-pyrazoline, mp 142 °C,12 Xmax 358 nm, e 2.03 X 104 (benzene); (9) l-phenyl-3-(3'-methoxyphenyl)-2pyrazoline, mp 73 °C, Xmax 364 nm, e 1.99 X 104 (benzene); (10) l-phenyl-3-(2'-methoxyphenyl)-2-pyrazoline, mp 110 °C, Xmax 361 nm, e 1.65 X 104 (benzene); (11) 1-phenyl-3-(2',4'-dimethoxyphenyl)-2-pyrazoline, mp 106 °C, Xmax 356 nm, e 1.72 X 104 (benzene); (12) l-phenyl-3-(2',5'-dimethoxyphenyl)-2-pyrazoline, mp 90 °C, Xmax 368 nm, e 1.73 X 104 (benzene); (13) l-phenyl-3-(3',4'-dimethoxyphenyl)-2-pyrazoline, mp 124 °C, Xmax 360 nm, c 2.30 X 104 (benzene); (14) l-phenyl-3-(3',5'-dimethoxyphenyl)-2pyrazoline, mp 126 °C, Xmax 363.5 nm, e 2.11 X 104 (benzene); (15) l-phenyl-3-(3',4',5'-trimethoxyphenyl)-2pyrazoline, mp 135 °C, Xmax 363 nm, e 2.17 X 104 (benzene).…”