反应详情

Oxalyl chloride (6.6 ml, 76 mmol, 1.2 eq) is added into a cold (ice bath) solution of 4-benzyloxy-benzoic acid (14.38 g, 63 mmol, 1 eq) and triethylamine (43.8 ml, 315 mmol, 5 eq) in dichloromethane (400 ml). The dark red mixture is warmed to room temperature and stirred for 2 h and then cooled to 0° C. A solution of 2-amino-2-methyl-propan-1-ol (5.6 g, 63 mmol, 1 eq) in dichloromethane (20 ml) is added and the mixture is stirred overnight at room temperature. The solvent is then removed under vacuum and the residue is dissolved in dichloromethane. This solution is washed once with water and the aqueous layer is extracted with dichloromethane. The organic layers are washed with a solution of 0.1 M sodium hydroxide and dried over magnesium sulfate. The solvent is removed under vacuum, to afford 15 g of 4-(benzyloxy)-N-(2-hydroxy-1,1-dimethylethyl)benzamide ax1 as a brown solid.

1. temperaturecooled to 0° C
2. stirringthe mixture is stirred overnight at room temperature
3. customThe solvent is then removed under vacuum
4. dissolutionthe residue is dissolved in dichloromethane
5. washThis solution is washed once with water
6. extractionthe aqueous layer is extracted with dichloromethane
7. washThe organic layers are washed with a solution of 0.1 M sodium hydroxide
8. dry with materialdried over magnesium sulfate
9. customThe solvent is removed under vacuum