Hydrochloric Acid → (R)-3-(2-(5-chloro-1-tosyl-1H-pyrrolo[2,3-b]pyridin-3-yl)-5-fluoro-pyrimidin-4-ylamino)-4,4-dimethylpentanoic acid

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-chloro-3-(5-fluoro-4-methylsulfinyl-pyrimidin-2-yl)-1-(p-tolylsulfonyl)pyrrolo[2,3-b]pyridine, 1a, (0.100 g, 0.215 mmol: prepared in a similar manner as described below for Compound 25a in scheme 4) and (R)-3-amino-4,4-dimethylpentanoic acid, 2a, (0.031 g, 0.215 mmol) in tetrahydrofuran (1.66 mL) was added freshly ground Na2CO3 (0.068 g, 0.645 mmol) followed by acetonitrile (0.331 mL). The reaction mixture was heated to 135° C. for 30 minutes in a microwave reactor. The reaction mixture was slowly poured into 75 mL of 1N HCl. The pH of final solution was adjusted to 1. The aqueous was extracted with EtOAc (3×5 mL), washed with brine, dried over Na2SO4 and filtered to obtain a crude solid residue. The crude residue was purified via silica gel chromatography (0-10% MeOH—CH2Cl2 gradient) afforded 78 mg of the desired product 3a: LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, RT=3.9 minutes (M+H) 546.22.

Provenance & Evidence