(R)-tert-butyl 3-(4-amino-6-fluoro-5-(4-phenoxyphenyl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)pyrrolidine-1-carboxylate → (R)-tert-butyl 3-(4-amino-6-methoxy-5-(4-phenoxyphenyl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)pyrrolidine-1-carboxylate

Participants

Reaction Steps

To a solution of (R)-tert-butyl 3-(4-amino-6-fluoro-5-(4-phenoxyphenyl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)pyrrolidine-1-carboxylate (3) (250 mg, 0.51 mmol) in MeOH was added MeONa. The resulting mixture was heated to reflux under N2 overnight. After cooling down to r. t., the reaction mixture was concentrated and the residue was partitioned between DCM and water. The layers were separated. The organic phase was washed with brine, dried over Na2SO4 and concentrated under reduced pressure to give (R)-tert-butyl 3-(4-amino-6-methoxy-5-(4-phenoxyphenyl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)pyrrolidine-1-carboxylate (87) (230 mg, 90% yield) as a yellow solid. LC-MS (ESI): m/z (M+1) 502.1.

Provenance & Evidence