Cesium carbonate → HCID 66673757, compound

Participants

Reaction Conditions

Reaction Steps

Dissolve methanesulfonic acid (R)-1-(5-bromo-pyridin-2-yl)-pyrrolidin-3-yl ester (0.23 g, 0.71 mmol) and (R)-3-fluoro-pyrrolidine hydrochloride (107 mg, 0.85 mmol) in DMF (5 mL) and add Cs2CO3 (0.69 g, 2.13 mmol). Warm to 70° C. overnight. Dilute with EtOAc (100 mL) and wash with H2O (3×100 mL). Dry with Na2SO4, filter, and concentrate. Purify the crude material by chromatography, eluting with 75-100% EtOAc/hexane to give 0.22g (100%) of the title compound. 1H-NMR (CDCl3), δ 1.87-2.00 (m, 1H), 2.00-2.09 (m, 1H), 2.18-2.30 (m, 2H), 3.40-3.80 (m, 9H), 5.10-5.28 (m, 1H), 5.34-5.40 (m, 1H), 6.28 (d, J=9.0 Hz, 1H), 7.51 (dd, J=9.0, 2.4 Hz, 1H), 8.18 (d, J=2.4 Hz, 1H).

Provenance & Evidence