Chlorotrimethylsilane → N-(4-(4-(3-aminosulfonyl-phenylamino)-7-tosyl-7H-pyrrolo[2,3-d]pyrimidin-2-ylamino)phenyl)-N-methylacetamide

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A mixture of 2-chloro-N-(3-aminosulfonyl-phenyl)-7-tosyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine (100 mg, 0.21 mmol), N-(4-aminophenyl)-N-methylacetamide (100 mg, 0.61 mmol) and trimethylsilyl chloride (0.050 mL, 0.40 mmol) in nBuOH (2 mL) and dioxane (2 mL) was heated at 110° C. for 4 h. More trimethylsilyl chloride (0.100 mL, 0.79 mmol) was added. The mixture was stirred at 110° C. for another 72 h. It was then purified by HPLC to give N-(4-(4-(3-aminosulfonyl-phenylamino)-7-tosyl-7H-pyrrolo[2,3-d]pyrimidin-2-ylamino)phenyl)-N-methylacetamide as a solid (20 mg).

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