Cesium fluoride → 4-(5-Pyrimidin-2-yl-thiazol-2-yl)-piperazine-1-carboxylic acid tert-butyl ester

Participants

Reaction Conditions

Reaction Steps

A round bottom flask containing 4-(5-bromo-thiazol-2-yl)-piperazine-1-carboxylic acid tert-butyl ester (100 mg, 0.29 mmol), 2-tributylstannanyl-pyrimidine (130 mg, 0.36 mmol), cesium fluoride (85 mg, 0.56 mmol) and palladium di-tert-butylphosphine was degassed three times with Ar. Dioxane was added and the formed reaction mixture was stirred at 90° C. overnight under Ar. Then the reaction mixture was filter through celite and the solvent was removed under vacuum and crude product was used directly in the next step.

Provenance & Evidence