[CH3:1][C:2]1[S:3][C:4]([CH:7]=[CH:8][C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=2[O:15][CH2:16][CH:17]2[O:19][CH2:18]2)=[N:5][N:6]=1.[CH:20]([NH2:23])([CH3:22])[CH3:21]>C(O)(C)C>[CH3:1][C:2]1[S:3][C:4]([CH:7]=[CH:8][C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=2[O:15][CH2:16][CH:17]([OH:19])[CH2:18][NH:23][CH:20]([CH3:22])[CH3:21])=[N:5][N:6]=17 g (0.025 mole) of 2-methyl-5-[2-(2,3-epoxypropoxy)-styryl]-1,3,4-thiadiazole and 2.9 g (0.05 mole) of isopropylamine are mixed in 100 ml of isopropanol and the mixture is refluxed for 7 hours. On cooling, a precipitate forms; this is recrystallized from toluene, together with the solid residue obtained from concentrating the mother liquor. 5.1 g (61% of theory), melting point 156°-157°.
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