反应详情

温度

25 °C

To a -5° C. solution of 3.0 g. (4.85 mmols.) of 1-benzyl-3-[2-benzyloxy-4-(1,1-dimethylheptyl)phenyl]-4-(3-phenylpropyl)-4-piperidinol in 5 ml. of pyridine is slowly added 2.89 g. (24.3 mmols.) of thionyl chloride. The reaction mixture is then allowed to slowly warm to 25° C. and is stirred 12 hours longers. The reaction mixture is quenched by slow addition to 200 ml. of cold 20% potassium carbonate. The quenched mixture is extracted with 250 ml. of ether, the extract washed once with 200 ml. 20% potassium carbonate, dried over magnesium sulfate and evaporated. THe residue is purified via column chromatography on 300 g. silica gel eluted with 50% ether-cyclohexane to yield the title compound.

1. customTo a -5° C.
2. customThe reaction mixture is quenched by slow addition to 200 ml
3. extractionThe quenched mixture is extracted with 250 ml
4. washof ether, the extract washed once with 200 ml
5. dry with material20% potassium carbonate, dried over magnesium sulfate
6. customevaporated
7. customTHe residue is purified via column chromatography on 300 g
8. washsilica gel eluted with 50% ether-cyclohexane