Methyl iodide → HCID 15449265, compound

Participants

Reaction Steps

A solution of 2-methyl-3-thioxo-2,3-dihydro-4H-pyrido[4,3-e]-1,2,4-thiadiazine 1,1-dioxide (1.0 g) in acetonitrile (20 mL) was supplemented with potassium carbonate (1.0 g), then with methyl iodide (1 mL). After 1 h at room temperature, the solvent was removed by distillation under reduced pressure. The residue was dispersed in water (50 mL) and the suspension was adjusted to pH 5 with formic acid. The insoluble material was collected by filtration, washed with water and dried (yield: 0.8 g); m.p. 135°-138° C. (Compound V).

Provenance & Evidence