Lawesson's reagent → 4-thioxo-1-(4-{(1S,5R)-1-[4-(trifluoromethyl)phenyl]-3-azabicyclo[3.1.0]hex-3-yl}butyl)-3,4-dihydro-2(1H)-pyrimidinone hydrochloride

Participants

Reaction Steps

A solution of 1-(4-{(1S,5R)-1-[4-(trifluoromethyl)phenyl]-3-azabicyclo[3.1.0]hex-3-yl}butyl)-2,4(1H,3H)-pyrimidinedione (E5, 110 mg, 0.3 mmol) and Lawesson's reagent (184 mg, 0.5 mmol) in DME (2 mL) was stirred at reflux for 2 hours. The solvent was evaporated under vacuum. The crude was re-dissolved in ethyl acetate and washed with water. The organic phase was dried (Na2SO4) filtered and evaporated; the crude was purified by flash chromatography with DCM-MeOH—NH4OH (98-2-0.2) to give the title compound as a yellow oil (80 mg, 63% yield).

Provenance & Evidence