反应详情

A solution of 5-(bromomethyl)-2-fluoropyridine (3.61 g, 19.00 mmol) in anhydrous DMF (22 mL) at 0° C. was treated with thiomorpholine (2.254 g, 21.85 mmol) (TCI America) in 3 mL of DMF and potassium carbonate (3.28 g, 23.75 mmol). The suspension was slowly warmed to RT and stirred at RT for 2 h. The reaction was quenched with 30 mL of ice water, stirred at RT for 30 min, and the solid was collected by filtration, and rinsed with water followed by ether to give 4-((6-fluoropyridin-3-yl)methyl)thiomorpholine (3.33 g, 15.69 mmol, 83% yield) as an off-white crystalline solid. 1H NMR (400 MHz, d6-DMSO) δ 8.12 (s, 1H); 7.89 (td, J=8.20, 2.2 Hz, 1H); 7.14 (dd, J=8.10, 2.80 Hz, 1H); 3.53 (s, 2H); 2.63-2.59 (br. 8H). m/z (ESI, +ve ion) 213 (M+H)+.

1. customThe reaction was quenched with 30 mL of ice water
2. stirringstirred at RT for 30 min
3. filtrationthe solid was collected by filtration
4. washrinsed with water