Sodium Hydroxide → [1-(6-Chloropyridazin-3-yl)-3-methyl-5-phenyl-1H-pyrazol-4-yl]acetic acid

Participants

Reaction Conditions

Reaction Steps

0.058 g (1.444 mmol) of 2-molar aqueous sodium hydroxide solution was added to 0.099 g (0.289 mmol) of methyl[1-(6-chloropyridazin-3-yl)-3-methyl-5-phenyl-1H-pyrazol-4-yl]acetate in 5.00 ml of methanol, and the mixture was stirred at 20° C. for 1 h. The methanol was removed under reduced pressure and the residue was poured into a mixture of 10 ml of water and 15 ml of dichloromethane. The aqueous phase was extracted with 15 ml of dichloromethane, acidified with concentrated hydrochloric acid (pH=3) and extracted three times with in each case 15 ml of dichloromethane. Drying of the combined organic phases and removal of the solvent under reduced pressure gave 0.052 g (54.7% of theory) of a brown wax-like solid.

Provenance & Evidence