m-Tolyl isocyanate → HCID 44231031, compound

Participants

Reaction Steps

To a solution of (R)-3-hydroxy-3-phenylpropyl 4-methylbenzenesulfonate (100 mg, 0.327 mmol) and 1-isocyanato-3-methylbenzene (44 mg, 0.327 mmol) in CH2Cl2 (2 mL) was added DBU (149 mg, 0.981 mmol) and the reaction mixture was refluxed overnight. After the solvent was removed under reduced pressure, the residue was separated by preparative HPLC to give (R)-6-phenyl-3-m-tolyl-1,3-oxazinan-2-one (5.34 mg, 6%:). LC-MS (10-80) tR=2.439 min, m/z=268; 1H NMR (CDCl3): 2.30-2.34 (m, 5H), 3.63-3.68 (m, 1H), 3.80-3.86 (m, 1H), 5.49 (dd, 1H), 7.09-7.45 (m, 9H).

Provenance & Evidence