No. R Ar No. R Ar b1 H Ph b15 5,7-DiCl 4-OH-Ph b2 H 4-F-Ph b16 5,7-DiCl 4-NH2CO-Ph b3 H 4-Pyridyl b17 F3CO 4-Cl-Ph b4 H 3-pyridyl b18 F3CO 4-CH3-Ph b5 H 4-NO2-Ph b19 F3CO 4-OH-Ph b6 H 3-NO2-Ph b20 F3CO 4-NH2CO-Ph b7 5-NO2 Ph b21 F 4-Cl-Ph b8 5-NO2 4-Cl-Ph b22 F 4-CH3-Ph b9 5-NO2 4-CH3-Ph b23 F 4-OH-Ph b10 5-NO2 4-OH-Ph b24 F 4-NH2CO-Ph b11 5-NO2 4-MeCONHPh b25 SO3Na 4-Cl-Ph b12 5-NO2 4-NH2CO-Ph b26 SO3Na 4-OH-Ph b13 5,7-DiCl 4-Cl-Ph b27 SO3Na 4-MeCONHPh b14 5,7-DiCl 4-CH3-Ph

Table 2: Chemical structures of 3-arylimino-2-oxindoles (b1-27).