Water → 6,7-Dimethoxy-1-methyl-1H-benzo(d)(1,3)oxazine-2,4-dione

Participants

Reaction Conditions

Reaction Steps

9.00 g (40.3 mmol) 6,7-Dimethoxy-1H-benzo(d)(1,3)oxazine-2,4-dione were dissolved in 60 ml dried dimethylformamide and cooled to 0° C. 1.32 g (52.3 mmol) sodium hydride was added and the solution was stirred for 30 min at room temperature (Argon). After cooling to 0° C. again 7.42 g (3.27 ml, 52.3 mmol) iodomethane was added and stirred at room temperature for 1 h. 300 ml water was added and the residue is filtrated, rinsed with water and ethyl ether.

Provenance & Evidence