Z. Jing
2008
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Journal
Journal of Wenzhou University
Abstract
Starting with propionic acid,3-ethyl-4-amino-5-mercapto-1,2,4-triazole was prepared,and cyclization of it with 4-fluoroacetophenone gave 3-ethyl-6-(4-fluorophenyl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thiadiazine.The purified product was dissolved in ethanol and kept an room temperature for 6 d and colourless single crystals were formed.The structure of the title compound was determined by X-ray diffraction analysis.Crystal data: monoclinic,space group P21/c,a = 1.341 43(6)nm,b = 1.309 96(11)nm,c = 0.723 38(11)nm,β= 105.090(2)°,Z=4,F(000)=544,R1=0.098 4.