Water → HCID 20553700, compound

Participants

Reaction Steps

A reaction flask, containing 7.2 g (0.0307 molecule) of 4-fluoro-5-sulphamylanthranilic acid (6) in 125 ml of methanol and 10 ml of concentrated sulphuric acid, was attached to a Soxhlet apparatus, containing molecular sieves 4A, immersed in methanol (25 ml). After 48 hours' reflux, the solution was poured into cold water (500 ml), containing 25 g of potassium carbonate. The solid, which separated out, was recovered on a filter and dried in vacuo at 80°; yield: 5.6 g (73.7%); m.p.: 209°-211°.

Provenance & Evidence