反应详情

To a stirred mixture of 2.62 g (0.00830 mole) of ethyl 3-[2-chloro-4-fluoro-5-(1,4-dihydro-5-oxo-5H-tetrazol-1-yl)phenyl]propenoate in 20 mL of N,N-dimethylformamide was added 1.46 g (0.00939 mole) of 3-fluoropropyl methanesulfonate and 1.30 g (0.00939 mole) of potassium carbonate. The reaction mixture was heated at 50°-60° C. and was stirred at that temperature for approximately 18 hours. The mixture was cooled and was poured into ice water. This mixture was extracted with ethyl acetate. The extract was dried over anhydrous magnesium sulfate and was filtered. The filtrate was evaporated under reduced pressure to yield 0.76 g of ethyl 3-[2-chloro-4-fluoro-5-[4-(3-fluoropropyl)-1,4-dihydro-5-oxo-5H-tetrazol-1-yl]phenyl]propenoate as an oil, compound 4 of Table 1.

1. temperatureThe reaction mixture was heated at 50°-60° C.
2. temperatureThe mixture was cooled
3. extractionThis mixture was extracted with ethyl acetate
4. dry with materialThe extract was dried over anhydrous magnesium sulfate
5. filtrationwas filtered
6. customThe filtrate was evaporated under reduced pressure