[OH-].[K+].[NH:3]1[CH:7]=[N:6][CH:5]=[N:4]1.CS(C)=O.[Cl:12][C:13]1[CH:18]=[C:17]([Cl:19])[CH:16]=[CH:15][C:14]=1[C:20]1([CH2:28]Br)[O:24][CH:23]([CH2:25][O:26][CH3:27])[CH2:22][O:21]1>O>[Cl:12][C:13]1[CH:18]=[C:17]([Cl:19])[CH:16]=[CH:15][C:14]=1[C:20]1([CH2:28][N:3]2[CH:7]=[N:6][CH:5]=[N:4]2)[O:24][CH:23]([CH2:25][O:26][CH3:27])[CH2:22][O:21]1A mixture of 13 parts of powdered potassium hydroxide (85% purity), 15 parts of 1H-1,2,4-triazole and 165 parts of dimethylsulfoxide is heated at 80° C. for 1 hour. 58 Parts of 2-(2,4-dichlorophenyl)-2-(bromomethyl)-4-(methoxymethyl)-1,3-dioxolane are added and the whole is heated at 150° C. for 12 hours. The reaction mixture is poured onto 1000 parts of water. The product is extracted with 1,1'-oxybisethane. The extract is dried, filtered and evaporated. The residue is distilled under high vacuum yielding pure 1-[2-(2,4-dichlorophenyl)-4-(methoxymethyl)-1,3-dioxolan-2-ylmethyl]-1H-1,2,4-triazole; bp. 161°-168° C. at 0.01 mm. pressure. The product crystallizes on standing, yielding a solid having a melting point of 64°-74° C.
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