4,7-Dihydro-5-methyl-7-(1-methylethyl)pyrazolo[1,5-a]pyrimidine-6-carboxylic Acid 1,1-dimethylethyl Ester → 1-[(4,7-Dihydro-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)carbonyl]-4-phenylpiperazine

Participants

Reaction Steps

Condensation of compound 3 and compound 4 as described in Example 18, Method 2 Step C provided the title compound. Reverse Phase LC/MS: YMC S5 ODS 4.6×50 mm Ballistic column, UV detection at 220λ, 4 min. gradient 0-100% Solvent B/A (Solvent A: 10% MeOH/H2O with 0.1% TFA, Solvent B: 90% MeOH/H2O with 0.1% TFA), 4 mL/min. Rt=1.96 min, (87% pure). (M+H: 323).

Provenance & Evidence