Triethylamine → (S)-6-phenyl-3-m-tolyl-1,3-oxazinan-2-one

Participants

Reaction Steps

To a solution of (S)-3-(m-tolylamino)-1-phenylpropan-1-ol (40 mg, 0.17 mmol) in dry CH2Cl2 (1 mL) was added triethylamine (50 mg, 0.51 mmol) and bis(trichloromethyl) carbonate (20 mg, 0.067 mmol) at 0° C., and the reaction mixture was stirred overnight at room temperature. When the reaction was over, the mixture was concentrated to give the crude product, which was purified by preparative TLC (3:1 Petroleum ether/EtOAc) to give (S)-6-phenyl-3-m-tolyl-1,3-oxazinan-2-one (12 mg, 26%). 1H NMR: (400 MHz, CDCl3): δ=2.24-2.37 (m, 5H), 3.52-3.63 (m, 1H), 3.70-3.79 (m, 1H), 5.42 (dd, 1H), 7.01-7.10 (m, 3H), 7.18-7.23 (m, 2H), 7.32-7.39 (m, 4H).

Provenance & Evidence