反应详情

温度

50 °C

A stirred solution of trans-(4-hydroxy-cyclohexyl)-carbamic acid tert-butyl ester (1.0 mmol) in anhydrous THF at 0° C. may be treated with sodium hydride (60% dispersion in mineral oil) (1.3 mmol). After stirring for 15 min the reaction mixture is allowed to come to room temperature. To the alkoxide solution is added 3-butyl-6-chloro-4-(4-cyclohexyloxy-phenyl)-pyridazine (0.74 mmol). After completion of the addition, the reaction mixture is warmed to 50° C. and is stirred 3 hours. The reaction is concentrated onto SiO2, purification via flash chromatography may be used (20-50% ethyl acetate in hexanes) to provide trans-{4-[6-butyl-5-(4-cyclohexyloxy-phenyl)-pyridazin-3-yloxy]-cyclohexyl}-carbamic acid tert-butyl ester.

1. customto come to room temperature
2. additionAfter completion of the addition
3. stirringis stirred 3 hours
4. concentrationThe reaction is concentrated onto SiO2, purification via flash chromatography