2-Methoxyaniline → 6-chloro-3-methoxy-N-(2-methoxyphenyl)-1-trityl-1H-pyrazolo[4,3-c]pyridin-4-amine

Participants

Reaction Conditions

Reaction Steps

4,6-dichloro-3-methoxy-1-trityl-1H-pyrazolo[4,3-c]pyridine (Intermediate 37B, 100 mg, 0.217 mmol), 2-methoxyaniline (26.0 μl, 0.217 mmol), t-butyl X-Phos palladacycle (5.97 mg, 8.69 μmol) were combined in a 5 ml microwave vial. The vial was evacuated and backfilled (3×) with N2 gas before adding THF (2.2 ml) and potassium t-butoxide (326 μl, 0.326 mmol). The reaction was allowed to stir at 80° C. for 2 hours. Room temperature was attained and the mixture was filtered through a celite frit and concentrated in vacuo while loading onto silica gel. Purifcation by MPLC 0-20% EtOAc/DCM gave 6-chloro-3-methoxy-N-(2-methoxyphenyl)-1-trityl-1H-pyrazolo[4,3-c]pyridin-4-amine (52B). MS: [M+H]+ m/z 547.

Provenance & Evidence