Water → (E)-N-[4-[[3-chloro-4-(2-pyridylmethoxy)phenyl]amino]-3-cyano-7-ethoxy-6-quinolyl]-3-[(2S,4R)-4-hydroxy-1-methyl-pyrrolidin-2-yl]prop-2-enamide

Participants

Reaction Steps

(E)-3-[(2S,4R)-4-(tert-Butyl(dimethyl)silyl)oxy-1-methyl-pyrrolidin-2-yl]-N-[4-[[3-chloro-4-(2-pyridylmethoxy)phenyl]amino]-3-cyano-7-ethoxy-6-quinolyl]prop-2-enamide 3f (50 mg, 0.07 mmol) and tetrabutyl ammonium fluoride (51 mg, 0.21 mmol) were dissolved in 5 mL of tetrahydrofuran, and the mixture was stirred for 12 hours. The reaction mixture was added with 1 mL of water, concentrated under reduced pressure and extracted with dichloromethane (50 mL×3). The combined organic extracts were washed with saturated brine (30 mL×2), dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure and the resulting residue was purified by silica gel column chromatography with elution system A to obtain the title compound (E)-N-[4-[[3-chloro-4-(2-pyridylmethoxy)phenyl]amino]-3-cyano-7-ethoxy-6-quinolyl]-3-[(2S,4R)-4-hydroxy-1-methyl-pyrrolidin-2-yl]prop-2-enamide 3 (17 mg, yield 40.4%) as a yellow solid.

Provenance & Evidence