Potassium Carbonate → N-tert-butyl-5-(5-((tert-butyldimethylsilyloxy)methyl)-4-(5-cyclopropyl-1H-pyrazol-3-ylamino)pyrimidin-2-yl)thiophene-2-sulfonamide

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-bromo-5-((tert-butyldimethylsilyloxy)methyl)-N-(5-cyclopropyl-1H-pyrazol-3-yl)pyrimidin-4-amine (210 mg, 0.49 mmol, 1.0 equiv.), 5-(N-tert-butylsulfamoyl)thiophen-2-ylboronic acid (260.4 mg, 0.99 mmol, 2 equiv.), PdCl2(dppf)CH2Cl2 (120.0 mg, 0.15 mmol, 0.3 equiv.), K2CO3 (236.67 mg, 1.72 mmol, 3.5 equiv.) in dioxane (10 mL) and water (2 mL) was heated for 12 h at 90° C. under nitrogen atmosphere. The solvent was removed and the residue was purified by silica gel chromatography (PE/EtOAc=5:12:1 as eluant) to give N-tert-butyl-5-(5-((tert-butyldimethylsilyloxy)methyl)-4-(5-cyclopropyl-1H-pyrazol-3-ylamino)pyrimidin-2-yl)thiophene-2-sulfonamide (120.0 mg, 43.5%) as white solid. LC-MS (m/z)=563.1 [M+H]+;

Provenance & Evidence