HCID 58109235, compound → HCID 58109535, compound

Participants

Reaction Steps

To a solution of ethyl 2-(3-((S)-1-((R/S)-6-methyl-2-oxo-6-phenyl-1,3-oxazinan-3-yl)ethyl)phenoxy)acetate (0.0369 g, 0.0928 mmol) in THF (5 mL) was added methylmagnesium bromide (1.4 M in toluene/THF, 1.0 mL, 1.4 mmol) at rt under nitrogen. After stirring for 1 h, the mixture was quenched with saturated NH4Cl (1 mL), diluted with CH2Cl2, and dried over Na2SO4. After the solvents were evaporated, the residue was purified by chromatography on silica gel eluted with hexanes/EtOAc to afford 0.0268 g (75%) of (R/S)-3-((S)-1-(3-(2-hydroxy-2-methylpropoxy)phenyl)ethyl)-6-methyl-6-phenyl-1,3-oxazinan-2-one. LC-MS Method 1, tR=1.64 min, m/z=384 (M+1). 1H NMR (CDCl3) 7.41-7.23 (m, 6H), 6.92-6.88 (m, 2H), 6.84-6.81 (m, 1H), 5.77 (q, J=7.0 Hz, 1H), 3.78 (s, 2H), 2.70-2.67 (m, 2H), 2.29-2.24 (m, 1H), 2.23 (s, 1H), 2.06-1.98 (m, 1H), 1.64 (s, 3H), 1.35 (s, 6H), 1.27 (d, J=7.0 Hz, 3H).

Provenance & Evidence