反应详情

3.1 g of 6-(4-(2-aminoethyl)phenyl)-6-(3-pyridyl)hex-5-enoic acid (prepared analogously to Example 10d) are stirred into 150 ml of dioxan with 5 ml of saturated potassium carbonate solution. Then 2.9 g of 4-fluorobenzenesulphonic acid chloride in 20 ml of dioxan are added and the resulting mixture is stirred overnight at ambient temperature. Acetic acid is added and a precipitate is formed. This is separated off and taken up in ethyl acetate, then dried and evaporated down. Finally, the residue is chromatographed over a silica gel column using chloroform/methanol 20:1 as eluant.

1. customa precipitate is formed
2. customThis is separated off
3. customdried
4. customevaporated down
5. customFinally, the residue is chromatographed over a silica gel column