dioxane 2-[2-methanesulfonyl-4-((S)-1-methanesulfonyl-piperidin-3-ylamino)-pyrimidin-5-yl]-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carbonitrile 、
二甲胺 、
二甲基砜 以to give 2-[2-dimethylamino-4-((S)-1-methanesulfonyl-piperidin-3-ylamino)-pyrimidin-5-yl]-5H-pyrrolo[2,3-b]pyrazine-7-carbonitrile的产率得到2-[2-dimethylamino-4-((S)-1-methanesulfonyl-piperidin-3-ylamino)-pyrimidin-5-yl]-5H-pyrrolo[2,3-b]pyrazine-7-carbonitrile