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A solution of 2-[3-(1-methyl-1H-pyrazol-4-yl)phenyl]-5-(1H-pyrazol-4-yl)pyrimidine (example 3, 120 mg; 0.40 mmol; 1.0 eq.) in dry DMA (1 mL) was added over a suspension of NaH (60% in oil, 28 mg; 1.19 mmol; 3.0 eq.) in dry DMA (2 mL) maintained at 0° C. under nitrogen atmosphere. The resulting mixture was stirred for one hour at 0° C. then heated at 100° C. O/N after the addition of a solution of 14-(2-Bromo-ethyl)-pyridine hydrobromide (159 mg; 0.60 mmol; 1.5 eq.) in DMA (2 mL). Cesium carbonate (388 mg; 1.19 mmol; 3.00 eq.) and 4-(2-Bromo-ethyl)-pyridine hydrobromide (159 mg; 0.60 mmol; 1.5 eq.) were added and the reaction mixture was heated again at 100° C. O/N. Reaction mixture was then cooled down to RT and quenched with water and extracted with DCM (three times). Combined organic phases were washed with water, brine, dried over magnesium sulfate, filtered and concentrated. The resulting oil was purified by autopreparative LC/MS to give the title compound a white foam (80 mg, 49%). 1H NMR (300 MHz, DMSO-d6) δ 9.12 (s, 2H), 8.56-8.50 (m, 1H), 8.50-8.41 (m, 2H), 8.38 (s, 1H), 8.26 (s, 1H), 8.24-8.17 (m, 1H), 8.15 (s, 1H), 7.92 (s, 1H), 7.77-7.66 (m, 1H), 7.51 (t, J=7.7 Hz, 1H), 7.29-7.19 (m, 2H), 4.48 (t, J=7.1 Hz, 2H), 3.89 (s, 3H), 3.21 (t, J=7.0 Hz, 2H). HPLC (Condition A): Rt 2.47 min (purity 99.6%). MS (ESI+): 408.4.

1. temperaturethen heated at 100° C
2. temperaturethe reaction mixture was heated again at 100° C
3. customReaction mixture
4. temperaturewas then cooled down to RT
5. customquenched with water
6. extractionextracted with DCM (three times)
7. washCombined organic phases were washed with water, brine
8. dry with materialdried over magnesium sulfate
9. filtrationfiltered
10. concentrationconcentrated
11. customThe resulting oil was purified by autopreparative LC/MS