Pyridine → Trifluoromethanesulfonic acid 2-[4-((R)-3-dimethylaminopyrrolidin-1-yl)-3-fluorophenyl]-1-oxo-1,2,3,4-tetrahydroisoquinolin-6-yl ester

Participants

Reaction Steps

Trifluoromethanesulfonic anhydride (2.06 g) was added to a solution of 2-[4-((R)-3-dimethylaminopyrrolidin-1-yl)-3-fluorophenyl]-6-hydroxy-3,4-dihydro-2H-isoquinolin-1-one (1.5 g) and pyridine (0.64 g) in dichloromethane (40 mL) at 0° C. After 30 minutes, the mixture was partitioned between water and dichloromethane, and the organic phase was dried over magnesium sulfate and concentrated. The product with the molecular weight of 501.50 (C22H23F4N3O4S) was obtained in this way; MS (ESI): 502 (M+H+).

Provenance & Evidence