反应详情

Trifluoromethanesulfonic anhydride (1.57 mL, 8.77 mmol) was added to 2,3-dimethyl-4-nitrophenol (1.12 g, 6.70 mmol) and triethylamine (2.5 mL, 17.9 mmol) in dichloromethane (40 mL) at 0° C. under Ar atmosphere and the resulting mixture was allowed to stir overnight at r.t. 2M HCl (50 mL) was then added and the solution was extracted with dichloromethane (3×100 mL). The organic extracts were combined, washed with saturated aqueous NaHCO3 (100 mL), diluted with n-heptane (200 mL), and passed through a pad of silica gel to give 1.96 g (98%) of 195JP07 as a yellow oil.

1. extractionthe solution was extracted with dichloromethane (3×100 mL)
2. washwashed with saturated aqueous NaHCO3 (100 mL)
3. additiondiluted with n-heptane (200 mL)