ethyl 3-oxo-3-(oxolan-2-yl)propanoate

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Potassium carbonate (2.419 g; 17.50 mmol; 2 eq.) was dissolved in DMSO (18 ml) and put under nitrogen atmosphere. 1-Azido-2-fluorobenzene, prepared according to Platz, M. S. et al. J. Org. Chem. 1989, 54, 5938-5945, (1.2 g; 8.75 mmol; 1 eq.) was dissolved in 10 mL of DMSO and ethyl 3-(tetrahydrofuran-2-yl)-3-oxopropanoate (Pharmacore, 1.793 mg; 9.63 mmol; 1.10 eq.) was added. This solution was added dropwise to the potassium carbonate solution at room temperature. The mixture was stirred at 70° C. for 3 hours. Water (30 mL) was added to the mixture and it was extracted with EtOAc (2×40 mL). Organics were washed with brine, dried over MgSO4 and concentrated under vacuum affording the title compound as a brown oil. It was used in the next step without further purification. HPLC (Method A) Rt 4.14 min (Purity: 86.6%). was extracted with EtOAc (2×40 mL) Organics were washed with brine dried over MgSO4 concentrated under vacuum

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Potassium carbonate (2.419 g; 17.50 mmol; 2 eq.) was dissolved in DMSO (18 ml) and put under nitrogen atmosphere. 1-Azido-2-fluorobenzene, prepared according to Platz, M. S. et al. J. Org. Chem. 1989, 54, 5938-5945, (1.2 g; 8.75 mmol; 1 eq.) was dissolved in 10 mL of DMSO and ethyl 3-(tetrahydrofuran-2-yl)-3-oxopropanoate (Pharmacore, 1.793 mg; 9.63 mmol; 1.10 eq.) was added. This solution was added dropwise to the potassium carbonate solution at room temperature. The mixture was stirred at 70° C. for 3 hours. Water (30 mL) was added to the mixture and it was extracted with EtOAc (2×40 mL). Organics were washed with brine, dried over MgSO4 and concentrated under vacuum affording the title compound as a brown oil. It was used in the next step without further purification. HPLC (Method A) Rt 4.14 min (Purity: 86.6%). was extracted with EtOAc (2×40 mL) Organics were washed with brine dried over MgSO4 concentrated under vacuum

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Potassium carbonate (2.419 g; 17.50 mmol; 2 eq.) was dissolved in DMSO (18 ml) and put under nitrogen atmosphere. 1-Azido-2-fluorobenzene, prepared according to Platz, M. S. et al. J. Org. Chem. 1989, 54, 5938-5945, (1.2 g; 8.75 mmol; 1 eq.) was dissolved in 10 mL of DMSO and ethyl 3-(tetrahydrofuran-2-yl)-3-oxopropanoate (Pharmacore, 1.793 mg; 9.63 mmol; 1.10 eq.) was added. This solution was added dropwise to the potassium carbonate solution at room temperature. The mixture was stirred at 70° C. for 3 hours. Water (30 mL) was added to the mixture and it was extracted with EtOAc (2×40 mL). Organics were washed with brine, dried over MgSO4 and concentrated under vacuum affording the title compound as a brown oil. It was used in the next step without further purification. HPLC (Method A) Rt 4.14 min (Purity: 86.6%). was extracted with EtOAc (2×40 mL) Organics were washed with brine dried over MgSO4 concentrated under vacuum