反应详情

Anhydrous zinc bromide (6.6 g, 0.0292 mole) is added to a suspension of 5-[3,5-bis(1,1-dimethylethyl)-4-[(2-methoxyethoxy)methoxy]phenyl]-3H-1,2,4-triazole-3-thione (2.4 g, 0.0058 mole) in methylene chloride (6.0 m). After 18 hours the mixture is diluted with methylene chloride (30 ml), washed with water (15 ml), saturated aqueous NaHCO3 (15 ml), saturated aqueous NaCl (10 ml), and dried over MgSO4. Filtration and concentration gives a solid which is recrystallized from ethyl acetate/isopropyl ether to provide 0.8 g (1.8 g theor., 44%) of product, mp >250° C.

1. washwashed with water (15 ml), saturated aqueous NaHCO3 (15 ml), saturated aqueous NaCl (10 ml)
2. dry with materialdried over MgSO4
3. filtrationFiltration and concentration
4. customgives a solid which
5. customis recrystallized from ethyl acetate/isopropyl ether
6. customto provide 0.8 g (1.8 g theor., 44%) of product, mp >250° C.