Potassium Carbonate → ethyl 3-[2-chloro-4-fluoro-5-[4-(3-fluoropropyl)-1,4-dihydro-5-oxo-5H-tetrazol-1-yl]phenyl]propenoate

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Reaction Steps

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-fluoropropylmethane sulfonate 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 -1yl]phenyl]propenoate as an oil, compound 4 of Table 1.

Provenance & Evidence