反应详情

温度

0 °C

A quantity of 3.470 g (8.138 mmol) of the compound from Example 1 was suspended in 35 ml of THF, admixed at 0° C. with 358 mg (8.952 mmol) of sodium hydride (60% suspension in mineral oil) and stirred at 0° C. for 90 min, in the course of which a solution was formed. A quantity of 2.519 g (8.952 mmol) of 2,2,2-trifluoroethyl trichloromethanesulphonate was added and the mixture was stirred at RT for 48 h. It was then stirred with water and concentrated on a rotary evaporator. The residue was taken up in ethyl acetate, and the organic phase was washed twice with water and dried over sodium sulphate. This gave 5.005 g of the target compound (79% of theory, purity by HPLC 65%). A quantity of 250 mg of the residue was purified by means of preparative HPLC (mobile phase: methanol/water, gradient 30:70→90:10).

1. customwas formed
2. stirringthe mixture was stirred at RT for 48 h
3. concentrationconcentrated on a rotary evaporator
4. washthe organic phase was washed twice with water
5. dry with materialdried over sodium sulphate
6. customA quantity of 250 mg of the residue was purified by means of preparative HPLC (mobile phase: methanol/water, gradient 30:70→90:10)