A solution of 500 mg (1.93 mmol) 1-[2-(4-allyloxy-benzyloxy)-ethyl]-1H-[1,2,3]-triazole in 10 ml dichloromethane was added to a solution of 904 mg (5.79 mmol) 1,3-dimethylbarbituric acid and 58 mg (0.05 mmol) Pd(PPh3)4 in 20 ml dichloromethane and stirred for 4.5 h at 40° C. The mixture was extracted with 3×20 ml sat. NaHCO3-solution and 8 ml water and the combined aqueous phases were reextracted with 2×10 ml dichloromethane. The organic extracts were combined and dried over MgSO4. Solvents were distilled off and the residue purified by chromatography on silica gel (ethyl acetate) to yield 248 mg (59%) of the title compound.
