Triethylamine → 2-((4-Chlorothiazol-2-yl)(5-(3-fluorophenyl)-1,3-dimethyl-2,4-dioxo-2,3,4,6-tetrahydro-1H-pyrrolo[3,4-d]pyrimidin-7-yl)methyl)allyl methanesulfonate

Participants

Reaction Steps

Methanesulfonic anhydride (1699 mg, 9.75 mmol) was added to a solution of 7-(1-(4-chlorothiazol-2-yl)-3-hydroxy-2-(hydroxymethyl)propyl)-5-(3-fluorophenyl)-1,3-dimethyl-1H-pyrrolo[3,4-d]pyrimidine-2,4(3H,6H)-dione (934 mg, 1.950 mmol) and triethylamine (1.631 mL, 11.70 mmol) in DCM (20 mL). The mixture was stirred at room temperature for 16 hours. Further portions of triethylamine (1.631 mL, 11.70 mmol) and methanesulfonic anhydride (1699 mg, 9.75 mmol) were added as necessary to allow the reaction to run to completion. The reaction was quenched with saturated NaHCO3(aq) and extracted with DCM (3×). The combined organic extracts were passed through a hydrophobic frit and evaporated under vacuum. Purification by chromatography on silica, eluting with 20-100% EtOAc/hexane, afforded the title compound.

Provenance & Evidence