Potassium Carbonate → HCID 13961089, compound

Participants

Reaction Steps

9.4 g (30 mmol) of 3,4-dihydro-2-isopropyl-4-methyl-2-(2-hydroxyphenyl)-2H-1,4-benzothiazin-3-one are boiled for 8 hours under reflux with 22 g (94 mmol) of 1,5-dibromo-3-oxapentane and 12.9 g (90 mmol) of potassium carbonate in 75 ml of 2-butanone. The mixture is then filtered with suction, and the filtrate is concentrated, finally in a high vacuum. This gives 12.4 g of an almost colorless oil.

Provenance & Evidence