1-Methylpiperazine → Ammonium Hydroxide

Participants

Reaction Conditions

Reaction Steps

3-[8-(2,6-difluorophenyl)-2-(methylsulfonyl)-7-oxo-5,6,7,8-tetrahydropyrimido[4,5-d]pyrimidin-4-yl]-N,4-dimethylbenzamide (0.033 g, 0.0678 mmol) was dissolved in THF (5 mL) and 1-methylpiperazine (0.034 g, 0.34 mmol) was added. The reaction was heated to 45° C. for 4 h and then cooled to room temperature overnight. The solvents were pumped off in vacuo, and the residue was flash chromatographed on silica gel (15 g) eluted with CH2Cl2 to 6:0.5:0.05, CH2Cl2:ethanol:NH4OH to give the title compound as a white amorphous solid. mp (dec) 164-168° C. LC-MS m/z 508 (M+H)+, 1.34 min (ret time).

Provenance & Evidence