5'-fluoro-N-methyl-2'-methylsulphonylacetylformanilide → Flosequinoxan

Participants

Reaction Steps

5'-Fluoro-N-methyl-2'-methylsulphonylacetylformanilide (0.20 g), prepared in a similar manner to that described in Example 11, was added to 1-octanol (25 ml) pre-heated to 160°. The mixture was heated at this temperature for 40 minutes and then allowed to cool to ambient temperature. The mixture was filtered, the solid washed with hexane (2×10 ml) and dried at 50° in vacuo to give 7-fluoro-1-methyl-3-methylsulphonyl-4-quinolone, m.p. 222.5°-224° (0.16 g). The product was heated at 90° with grinding to give 7-fluoro-1-methyl-3-methylsulphonyl-4-quinolone, m.p.234°-235° (0.16 g).

Provenance & Evidence