反应详情

4.33 mL (5.75 g, 33 mmol) of diethyl azo dicarboxylate were added to 18 g (68.75 mmol) of triphenylphosphine in 500 mL of dichloromethane at 0° C. and stirred for 15 min. 6.16 g (27.5 mmol) 5-bromo-isoquinolin-6-ol (2), 5.92 g (27.5 mmol) (trans-4-hydroxy-cyclohexyl)-carbamic acid tert-butyl ester and 3.81 mL (33 mmol) triethyl amine were added. The mixture was stirred for 4 days. The precipitate was removed by filtration, washed with dichloromethane and the solvents were distilled off. The crude product was purified by flash chromatography using ethyl acetate/n-heptane as eluent to give 2.77 g (24%) of 85. Rt=1.37 min (Method #1). Detected mass: 421.1/423.1 (M+H+).

1. stirringThe mixture was stirred for 4 days
2. customThe precipitate was removed by filtration
3. washwashed with dichloromethane
4. distillationthe solvents were distilled off
5. customThe crude product was purified by flash chromatography