Morpholine → HCID 59395489, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 3-[3-butyl-8-chloro-2,6-dioxo-7-(2-propen-1-yl)-2,3,6,7-tetrahydro-1H-purin-1-yl]propyl methanesulfonate (0.08 g, 0.19 mmol) in DMF (5 ml) was treated with potassium carbonate (0.08 g, 0.6 mmol) and 1-benzylpiperazine (0.04 g, 0.23 mmol) and then heated at 70° C. for 2 h. The mixture was cooled, evaporated to dryness and partitioned between 10 ml of DCM and 10 ml of water. The organic phase was evaporated to dryness and the residue dissolved in anhydrous THF (5 ml). The solution was cautiously degassed by the repeated application of vacuum to the reaction mixture and subsequent backfilling with nitrogen gas and then treated with tetrakis(triphenylphosphine)palladium(0) (0.010 g, 0.009 mmol) and morpholine (0.200 ml, 2.3 mmol) and the mixture stirred for 2 h in a nitrogen atmosphere. The mixture was evaporated and the residue taken up in 5 ml of methanol and added to a 2 g aminopropyl SPE cartridge which was then washed with methanol and the product eluted using a 3% solution of acetic acid in methanol. Product-containing fractions were pooled and evaporated to dryness. The product was then purified by flash chromatography using a gradient elution from DCM/2% Acetic acid to DCM/20% MeOH/2% Acetic acid and the final product freeze-dried from 1,4-dioxan to give the title compound as a white solid (0.021 g, 24%).

Provenance & Evidence