tert-Butyl hydroperoxide → 5-(5-Bromo-2-fluorophenyl)-5,6-dihydro-5-methyl-2H-1,4-oxazin-3-amine

Participants

Reaction Steps

To a suspension of 5-(5-bromo-2-fluoro-phenyl)-5-methyl-morpholine-3-thione (14.0 g, 46 mmol) in 7N NH3/MeOH (308 ml) was added tBuOOH (72.8 ml of a 70% aq. soln.) and NH4OH (131.6 ml of a 25% aq. soln.). The reaction mixture was stirred over night at rt, quenched with aq. Na2S2O3 soln., concentrated and extracted with EtOAc to give the title compound that was used in the next step without further purification.

Provenance & Evidence