To a solution of 2-(3,5-dichlorophenylamino)-1-(4-methyl-3-(7-tosyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)piperidin-1-yl)ethanone (100 mg, 0.17 mmol) in MeOH:H2O (4:1 mL) was added K2CO3 (94 mg, 0.68 mmol) and the reaction mixture was heated to 60° C. for 1 h. The reaction mixture was concentrated in vacuo and the residue obtained was diluted in EtOAc (50 mL). The EtOAc suspension was filtered through celite, the filtrate was dried over Na2SO4, and concentrated in vacuo to give a residue that was subjected to purification by column chromatography (silica gel, gradient MeOH in DCM) to afford the titled intermediate (20 mg, 27%). 1H NMR (400 MHz, DMSO-d6): δ 11.61-11.45 (m, 1H), 8.19-8.06 (m, 1H), 7.08-6.43 (m, 5H), 6.22-6.15 (m, 1H), 4.59-4.21 (m, 2H), 4.15-3.75 (m, 3H), 3.25-2.98 (m, 2H), 2.78-2.45 (m, 1H), 2.15-1.99 (m, 1H), 1.86-1.7-62 (m, 2H), 0.98-0.77 (m, 3H). LC-MS: m/z [M+1]=433.
