New 3-(2-(5-(aryldiazenyl)-4-methylthiazol-2-yl) hydrazono) indolin-2-ones were prepared by the reaction of isatin β-thiosemicarbazone with different hydrazonoyl chlorides. Imide derivatives were prepared by the reaction of isatin hydrazone with various anhydrides, and a series of new sulfonimides was also synthesized. All new compounds were tested for their biological activities.