Potassium Hydroxide → HCID 21254974, compound

Participants

Reaction Steps

A solution of 0.126 g of KOH in 5 ml of H2O was added to a solution of 0.61 mg of ethyl 2-[3-benzenesulphonyl-5-methyl-7-(4-methyl-piperazin-1-yl)-pyrazolo[1,5-a]pyrimidin-2-yloxy]-acetate in 20 ml of dioxan/THF 1:1 and stirred at RT for 2.5 hrs. The reaction solution was evaporated and the residue was partitioned between H2O and CH2Cl2. The aqueous phase was washed three times with 30 ml of CH2Cl2,and the combined organic phases were dried (MgSO4), filtered and evaporated. Chromatography (SiO2,CH2Cl2/MeOH 9:1) of the residue and crystallization from EtOH yielded 0.18 g (18%) of 2-[3-benzenesulphonyl-5-methyl-7-(4-methyl-piperazin-1-yl)-pyrazolo[1,5-a]pyrimidin-2-yloxy]-ethanol as colorless crystals. M.p. 177.5-178°.

Provenance & Evidence