2-(Oxan-4-yl)ethan-1-amine → 7-(1H-Pyrrolo[2,3-b]pyridin-5-yl)-1-(2-(tetrahydro-2h-pyran-4-yl)ethyl)-3,4-dihydropyrazino[2,3-b]pyrazin-2(1H)-one

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Ethyl 2-(5-bromo-3-(2-(tetrahydro-2H-pyran-4-yl)ethylamino)pyrazin-2-ylamino)acetate. Ethyl 2-(3,5-dibromopyrazin-2-ylamino)acetate (See Example 6.B) (1.0 g, 2.95 mmol) and 2-(tetrahydro-2H-pyran-4-yl)ethanamine (0.381 g, 2.95 mmol) were placed in a microwave via, dimethylsulfoxide (2 mL) was added and the resulting mixture was heated in a Biotage Emrys Optimizer microwave reactor at 150° C. for 3600 s. The crude reaction mixture was purified using silica gel chromatography (33% ethyl acetate in hexanes) to yield the title compound (0.5 g, 1.3 mmol, 44% yield). MS (ESI) m/z 387.1 [M]+, 389.1 [M+2]+.

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