Pyridine → HCID 58109643, compound

Participants

Reaction Steps

To a solution of (S)-3-((S)-1-(2′,4′-difluorobiphenyl-4-yl)ethyl)-6-(4-fluorophenyl)-6-(2-hydroxyethyl)-1,3-oxazinan-2-one (250 mg, 0.55 mmol) in methylene chloride (10 mL) was added pyridine (0.5 mL) and PBr3 (75 mg). The formed mixture was stirred for 2 h. The mixture was washed with water. The organic phase was separated, and concentrated to give the crude product, which was purified by preparative TLC to afford (S)-6-(2-bromoethyl)-3-((S)-1-(2′,4′-difluorobiphenyl-4-yl)ethyl)-6-(4-fluorophenyl)-1,3-oxazinan-2-one (60 mg, 23%). 1H NMR: (400 MHz, CDCl3): δ=1.45 (d, 3H), 2.12-2.38 (d, 4H), 2.43 (m, 1H), 2.94 (m, 2H), 3.49 (m, 1H), 5.22 (m, 1H), 6.83 (m, 2H), 6.95 (m, 4H), 7.19 (m, 1H), 7.22 (m, 2H).

Provenance & Evidence