Methyl iodide → tert-butyl(6-chloro-3-methoxy-1-trityl-1H-pyrazolo[4,3-c]pyridin-4-yl)(methyl)carbamate

Participants

Reaction Conditions

Reaction Steps

t-Butyl(6-chloro-3-methoxy-1-trityl-1H-pyrazolo[4,3-c]pyridin-4-yl)carbamate (45B, 86 mg, 0.159 mmol) was taken up in DMF (1.6 ml). Cs2CO3 (104 mg, 0.318 mmol) followed by iodomethane (10.93 μl, 0.175 mmol) were added. The reaction was allowed to stir at 60° C. for 2 hours. EtOAc and saturated NH4Cl were added. The products were extracted into EtOAc (3×). The combined organic layers were washed with brine, dried over MgSO4, and concentrated in vacuo to give tert-butyl(6-chloro-3-methoxy-1-trityl-1H-pyrazolo[4,3-c]pyridin-4-yl)(methyl)carbamate (46B). Reaction products were carrried forward without purification. MS: [M+H]+ m/z 555.

Provenance & Evidence