Cesium fluoride → N-(6-methoxypyridin-3-yl)-5-(4-methyl-6-(methylthio)-1,3,5-triazin-2-yl)-2-(piperidin-1-yl)pyrimidin-4-amine

Participants

Reaction Conditions

Reaction Steps

A glass microwave reaction vessel was charged with 5-iodo-N-(6-methoxypyridin-3-yl)-2-(piperidin-1-yl)pyrimidin-4-amine (161 mg, 0.391 mmol), 2-methyl-4-(methylthio)-6-(tributylstannyl)-1,3,5-triazine (168 mg, 0.391 mmol), cesium fluoride (119 mg, 0.783 mmol), copper(I) iodide (15 mg, 0.078 mmol), tetrakis(triphenylphosphine)palladium(0) (45.2 mg, 0.039 mmol) and dioxane (2 mL). The reaction mixture was stirred and heated in a Emrys Optimizer microwave reactor (Personal Chemistry, Biotage AB, Inc., Upssala, Sweden) at 140° C. for 30 min. The reaction mixture was diluted with water (10 mL) and extracted with EtOAc (2×30 mL). The organic extract was washed with saturated NaCl (10 mL) and dried over Na2SO4. The solution was filtered and concentrated in vacuo to give the crude material as an orange solid. The crude product was purified by silica gel chromatography eluting with 40% EtOAc/Hexanes to give N-(6-methoxypyridin-3-yl)-5-(4-methyl-6-(methylthio)-1,3,5-triazin-2-yl)-2-(piperidin-1-yl)pyrimidin-4-amine (36 mg, 0.085 mmol, 21.66% yield). 1H NMR (300 MHz, CDCl3) δ 11.61 (s, 1H); 9.41 (s, 1H); 7.99 (d, J=8.48 Hz, 1H); 6.77 (d, J=8.77 Hz, 1H); 3.95 (s, 3H); 3.78-3.91 (m, 4H); 2.59 (s, 3H); 2.56 (s, 3H); 1.56-1.78 (m, J=2.63 Hz, 6H). m/z (ESI, +ve ion) 425.0 (M+H)+.

Provenance & Evidence