Hydrochloric Acid → N-(4,4-dimethyl-1,2,3,4-tetrahydro-isoquinolin-7-yl)-2-[(1H-pyrrolo[2,3-b]pyridin-4-ylmethyl)-amino]-nicotinamide

Participants

Reaction Steps

A mixture of 4,4-dimethyl-7-({2-[(1H-pyrrolo[2,3-b]pyridin-4-ylmethyl)-amino]-pyridine-3-carbonyl}-amino)-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester (0.115 g, step A), HCl (4N, 3 mL) and dioxane (4 mL) was stirred at RT for overnight. Sat'd NaHCO3 was added until the bubbling stopped. The aqueous phase was extracted with EtOAc 3 times. The combined organic phases were dried over Na2SO4 and evaporated to yield a light purple oil as a crude product, which was purified by chromatography through silica gel (10 g, 5% MeOH/CHCl3 with 1% NH4OH) to afford N-(4,4-dimethyl-1,2,3,4-tetrahydro-isoquinolin-7-yl)-2-[(1H-pyrrolo[2,3-b]pyridin-4-ylmethyl)-amino]-nicotinamide. The material was further purified via silica gel column chromatography (10 g, 1% to 5% MeOH/CH2Cl2, stepwise gradient) to afford pure title compound.

Provenance & Evidence