Reaktion #475465

Reaktionsgleichung

8-bromo-2,2-dimethyl-3,4-dihydro-2H-benzo[1,4]oxazine

8-bromo-2,2-dimethyl-4H-benzo[1,4]oxazin-3-one

2-amino-6-bromophenol

2-bromo-2-methylproprionyl bromide

2-fluorobenzenesulfonyl chloride

→

8-bromo-4-(2-fluorobenzenesulfonyl)-2,2-dimethyl-3,4-dihydro-2H-benzo[1,4]oxazine

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigeprepared

Vorschrift

Using the above procedure, but starting with 8-bromo-2,2-dimethyl-3,4-dihydro-2H-benzo[1,4]oxazine (prepared by reducing 8-bromo-2,2-dimethyl-4H-benzo[1,4]oxazin-3-one, which in turn was prepared from 2-amino-6-bromophenol and 2-bromo-2-methylproprionyl bromide via the procedure described by Van Hes et al., WO 01/14330) and 2-fluorobenzenesulfonyl chloride, 8-bromo-4-(2-fluorobenzenesulfonyl)-2,2-dimethyl-3,4-dihydro-2H-benzo[1,4]oxazine was obtained as a white solid. MP.: 108.0-110.1°.

Quelle