(^a College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046)
(^b State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071)

By the condensation of 4-substituted acetophenones (1a～1d) with benzene hydrazine and subsequent reaction with Vilsmeier-Haak reagent, 1-phenyl-3-aryl-4-formylpyrazoles (3a～3d) were obtained. Then they reacted with 2-hydrazino-4/6-substituted benzothiazoles (4a～4f) and produced a series of novel 1-phenyl-3-arylpyrazole-4-aldehyde N-(4/6-substituted benzothiazol-2-yl) hydrazones 5～8. Their structures were es-tablished on the basis of IR, ¹H NMR, MS spectra and elemental analysis. The fluorescent spectra of compounds 5～8 were detected and showed that they had fluorescence. The ef-fect of the structure of the compound on fluorescent properties was also discussed.