反应详情

To a solution of 3-nitro-4-methylbenzoic acid (17.3 g 96 mmol) in dichloromethane (250 ml) and tert-butanol (35.8 g 470 mmol) at 0° C. under nitrogen was added 4-dimethylaminopyridine (6 g 50 mmol) and 1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (25.8 g 140 mmol) and the solution allowed to come to room temperature over 1 hour. then stirred overnight. The solution was poured into 1:1 ethyl acetate:water (800 ml) and the organic layer washed with aqueous bicarbonate and saturated aqueous sodium chloride. then dried (MgSO4) and evaporated. to give the product as a clear oil (22.6 g).

1. washwater (800 ml) and the organic layer washed with aqueous bicarbonate and saturated aqueous sodium chloride
2. dry with materialthen dried (MgSO4)
3. customevaporated