反应详情

239 mg (1.06 mmol) of 2-chloro-6-(trifluoromethyl)nicotinic acid and 1.6 g (2.0 mmol) of Mukaiyama reagent on polymer (1.25 mmol/g) are admixed with 15 ml of dichloromethane (abs.) and 0.31 g (3.03 mmol) of triethylamine. Then 100 mg (1.01 mmol) of 4-methyl-1,2,5-oxadiazol-3-ylamine are added. The reaction mixture is stirred at room temperature (RT) for 14 h. Subsequently, the solid is removed by means of a frit and washed with 10 ml of dichloromethane. The filtrate is concentrated and purified by chromatography using a silica gel column with heptane/ethyl acetate. Yield: 52 mg (16%).

1. customSubsequently, the solid is removed by means of a frit
2. washwashed with 10 ml of dichloromethane
3. concentrationThe filtrate is concentrated
4. custompurified by chromatography