1-bromo-3-cyclopropylpropan-2-one

Conditions: temp:40.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture in which methylene chloride (10 mL) and a saturated brine (10 mL) were added to methyl 3-{[5-(4-carbamimidoyl-3-fluorophenyl)-4-methylpyridin-2-yl]oxy}-2,2-dimethylpropanoate acetic acid salt (300 mg), 1-bromo-3-cyclopropylpropan-2-one (190 mg) and potassium carbonate (346 mg) was stirred at 40° C. for 5 hours. The organic layer was separated, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (chloroform:methanol=100:0 to 97:3) to obtain methyl 3-[(5-{4-[5-(cyclopropylmethyl)-1H-imidazol-2-yl]-3-fluorophenyl}-4-methylpyridin-2-yl)oxy]-2,2-dimethylpropanoate (248 mg). The organic layer was separated dried over anhydrous sodium sulfate concentrated under reduced pressure The obtained residue was purified by silica gel column chromatography (chloroform:methanol=100:0 to 97:3)

Conditions: temp:40.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture in which methylene chloride (10 mL) and a saturated brine (10 mL) were added to methyl 3-{[5-(4-carbamimidoyl-3-fluorophenyl)-4-methylpyridin-2-yl]oxy}-2,2-dimethylpropanoate acetic acid salt (300 mg), 1-bromo-3-cyclopropylpropan-2-one (190 mg) and potassium carbonate (346 mg) was stirred at 40° C. for 5 hours. The organic layer was separated, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (chloroform:methanol=100:0 to 97:3) to obtain methyl 3-[(5-{4-[5-(cyclopropylmethyl)-1H-imidazol-2-yl]-3-fluorophenyl}-4-methylpyridin-2-yl)oxy]-2,2-dimethylpropanoate (248 mg). The organic layer was separated dried over anhydrous sodium sulfate concentrated under reduced pressure The obtained residue was purified by silica gel column chromatography (chloroform:methanol=100:0 to 97:3)