2-bromocyclobutan-1-one

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 2-(trifluoromethyl)phenol (2.72 g, 16.8 mmol) in acetone (147 mL) at 0° C. was treated with cesium carbonate (5.47 g, 16.8 mmol), followed by drop-wise addition of C3 (2.5 g, 16.8 mmol). The mixture was stirred at 0° C. for 1.5 hours, filtered through Celite, and concentrated in vacuo to afford the title compound as a colorless oil. Yield: 3.5 g, 15 mmol, 89%. 1H NMR (400 MHz, CDCl3) δ 7.56 (br d, J=7.7 Hz, 1H), 7.45-7.50 (m, 1H), 7.14 (d, J=8.3 Hz, 1H), 7.07 (br dd, J=7.6, 7.6 Hz, 1H), 5.31-5.37 (m, 1H), 2.92-3.00 (m, 2H), 2.55-2.66 (m, 1H), 2.19-2.30 (m, 1H). filtered through Celite concentrated in vacuo

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 2-(trifluoromethyl)phenol (2.72 g, 16.8 mmol) in acetone (147 mL) at 0° C. was treated with cesium carbonate (5.47 g, 16.8 mmol), followed by drop-wise addition of C3 (2.5 g, 16.8 mmol). The mixture was stirred at 0° C. for 1.5 hours, filtered through Celite, and concentrated in vacuo to afford the title compound as a colorless oil. Yield: 3.5 g, 15 mmol, 89%. 1H NMR (400 MHz, CDCl3) δ 7.56 (br d, J=7.7 Hz, 1H), 7.45-7.50 (m, 1H), 7.14 (d, J=8.3 Hz, 1H), 7.07 (br dd, J=7.6, 7.6 Hz, 1H), 5.31-5.37 (m, 1H), 2.92-3.00 (m, 2H), 2.55-2.66 (m, 1H), 2.19-2.30 (m, 1H). filtered through Celite concentrated in vacuo

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 2-(trifluoromethyl)phenol (2.72 g, 16.8 mmol) in acetone (147 mL) at 0° C. was treated with cesium carbonate (5.47 g, 16.8 mmol), followed by drop-wise addition of C3 (2.5 g, 16.8 mmol). The mixture was stirred at 0° C. for 1.5 hours, filtered through Celite, and concentrated in vacuo to afford the title compound as a colorless oil. Yield: 3.5 g, 15 mmol, 89%. 1H NMR (400 MHz, CDCl3) δ 7.56 (br d, J=7.7 Hz, 1H), 7.45-7.50 (m, 1H), 7.14 (d, J=8.3 Hz, 1H), 7.07 (br dd, J=7.6, 7.6 Hz, 1H), 5.31-5.37 (m, 1H), 2.92-3.00 (m, 2H), 2.55-2.66 (m, 1H), 2.19-2.30 (m, 1H). filtered through Celite concentrated in vacuo