反应详情

温度

-78 °C

To a solution of oxalyl chloride (152 μl; 1.74 mmol) in DCM (4 mL) at −78° C. was added a solution of DMSO (237 μl; 3.34 mmol) in DCM (2 mL). The mixture was stirred for 5 min before the addition of a solution of 2,2-dimethyl-6-morpholin-4-ylhex-4-yn-1-ol (307 mg; 1.45 mmol) in DCM (2 mL). The mixture was stirred again at −78° C. for 15 min and TEA (1.05 mL) was added. It was then brought back to rt and stirred for 2 h. Water was added. Organic phase was washed with a saturated solution of NaHCO3 and brine. It was dried over magnesium sulfate, filtrated and concentrated to give the title compound as a colorless oil (303 mg, quantitative). 1H NMR (CDCl3) δ: 9.51 (s, 1H), 3.73 (m, 4H), 3.27 (m, 2H), 2.56 (m, 4H), 2.36 (m, 2H), 1.14 (s, 6H).

1. customwas then brought back to rt
2. stirringstirred for 2 h
3. washOrganic phase was washed with a saturated solution of NaHCO3 and brine
4. dry with materialIt was dried over magnesium sulfate
5. filtrationfiltrated
6. concentrationconcentrated