Sodium Carbonate → 5-(1-Morpholin-4-yl-5,6,8a,9-tetrahydro-8h-7,10-dioxa-2,4,4b-triaza-phenanthren-3-yl)-pyrimidin-2-ylamine

Participants

Reaction Conditions

Reaction Steps

A mixture of 3-chloro-1-morpholin-4-yl-5,6,8a,9-tetrahydro-8H-7,10-dioxa-2,4,4b-triaza-phenanthrene (45 mg, 0.144 mmol), 5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-pyrimidin-2-ylamine (60 mg, 0.271 mmol), PdCl2(PPh3)2 (10 mg, 0.014 mmol) and sodium carbonate (460 μL, 0.46 mmol, 1M aqueous solution) in acetonitrile (2 mL) was degassed and heated at 120° C. for 30 mins in a microwave reactor. The reaction mixture was loaded onto an Isolute® SCX-2 cartridge which was washed with methanol and the product eluted with 2M ammonia in methanol. The basic fractions were combined and concentrated in vacuo. The resulting residue was purified by reverse phase HPLC (Phenomenex Gemini 5 μm C18, 0.1% HCO2H in water on a gradient acetonitrile 5-98%) affording 121 as a white solid (3 mg, 6%). LCMS (method B): RT=3.08 min, [M+H]+=372. 1H NMR (400 MHz, CDCl3): δ 9.11 (2H, s), 5.18 (2H, broad s), 4.55 (1H, dd, J=13.5, 2.4 Hz), 4.22 (1H, dd, J=10.8, 3.1 Hz), 4.05 (1H, dd, J=11.5, 3.5 Hz), 3.88 (2H, m), 3.81 (4H, m), 3.69-3.56 (6H, m), 3.29 (1H, t, J=11.5 Hz), 3.02 (1H, m).

Provenance & Evidence