反应详情

To a solution of 2-(2-chloro-3-pyridinyl)propan-2-ol (1 g; 5.83 mmol) in dichloromethane (10 mL) cooled to −70° C. was added diethylaminosulphur trifluoride (1.1272 g; 0.857 mL; 6.993 mmol) dropwise. On completion of the addition the reaction mixture was allowed to warm to room temperature and stir for 30 min. TLC showed starting material consumed. The reaction mixture was poured onto sodium carbonate solution and extracted with dichloromethane. The dichloromethane extracts were combined, washed with water, dried over magnesium sulphate filtered and evaporated under reduced pressure to give an oil. Yield=0.9 g. 1H NMR (360 MHz) DMSO-d6 δ: 1.83 (3H, s), 1.89 (3H, s), 7.30 (1H, dd, J 4.6 and 7.7 Hz), 8.00 (1H, dd, J 1.9 and 7.9 Hz), 8.34 (1 H, dd, J 1.9 and 4.7 Hz).

1. additionOn completion of the addition the reaction mixture
2. customconsumed
3. additionThe reaction mixture was poured onto sodium carbonate solution
4. extractionextracted with dichloromethane
5. washwashed with water
6. dry with materialdried over magnesium sulphate
7. filtrationfiltered
8. customevaporated under reduced pressure
9. customto give an oil