反应详情

温度

-30 °C

To a solution of 4-(5-methyl-pyridin-2-ylmethyl)phenol (0.8 mmol) prepared as described above and ethyldiisopropylamine (1.5 mmol) in CH2Cl2 (5 mL) at −30° C. was added trichloromethyl chloroformate (1.0 mmol). The solution was stirred at −30° C. for 10 min and at reflux temperature for 2 h. The solution was evaporated to dryness and redissolved in CH2Cl2 (5 mL) and cooled to 0° C. before addition of 4-phenylpiperidine (1.5 mmol). The solution was stirred at room temperature for 16 h evaporated to give the crude product which was purified by FC (Quad flash 40 CH2Cl2:Et2O:Heptane:Et3N 1:1:2:0.25->1:1:1:0.25) to give the title compound in 28% yield as an oil.

1. customat −30° C.
2. temperatureat reflux temperature for 2 h
3. customThe solution was evaporated to dryness
4. dissolutionredissolved in CH2Cl2 (5 mL)
5. stirringThe solution was stirred at room temperature for 16 h
6. customevaporated
7. customto give the crude product which
8. customwas purified by FC (Quad flash 40 CH2Cl2:Et2O:Heptane:Et3N 1:1:2:0.25->1:1:1:0.25)