Water → 4-[2-(4-Bromo-pyrazol-1-yl)-pyrimidin-4-yl]-morpholine

Participants

Reaction Conditions

Reaction Steps

To a cooled (0° C.) solution of 4-bromo-1H-pyrazole (0.74 g, 5.0 mmol) in anhydrous DMF (7 ml) was added NaH (60% dispersion in mineral oil, 0.22 g, 5.5 mmol) in a portionwise fashion over 10 minutes. The mixture was stirred like this for 30 minutes before the addition of 4-(2-chloro-pyrimidin-4-yl)-morpholine (21)(1.0 g, 5.00 mmol). The reaction was then heated under the influence of microwave radiation (120° C., 14 minutes, fixed hold time, high absorption setting). The reaction was then cooled to room temperature and water added (14 ml) which caused a precipitate to form. The solid was collected by filtration, washed with water and dried in a desiccator to give the title compound (1.44 g, 93%) in sufficiently pure form to be used without any further purification. m/z (LC-MS, ESP): 310 [M+H]+, R/T=3.08 mins.

Provenance & Evidence