Regeneration of 6-fluoro-4-chromanone from 6-fluoro-4-...

Details Regeneration of 6-fluoro-4-chromanone from 6-fluoro-4-... Regeneration of 6-fluoro-4-chromanone from 6-fluoro-4-...

C - Chemistry, Metallurgy

07

D

260/359.2

C07D 311/22 (2006.01) C07D 311/68 (2006.01) C07D 491/10 (2006.01)

Patent

CA 1215378

PC 6830 REGENERATION OF 6-FLUORO-4-CHROMANONE FROM 6-FLUORO-4-UREIDOCHROMAN-4-CARBOXYLIC ACID Abstract 6-Fluoro-4-chromanone can be regenerated from (R)- 6-fluoro-4-ureidochroman-4-carboxylic acid, or from mixtures of (R)-6-fluoro-4-ureidochroman-4-carboxylic acid and its racemic modification, by oxidation with a permanganate, especially potassium permanganate. 6- Fluoro-4-chromanone is a chemical intermediate useful for preparing sorbinil, an aldose reductase inhibitor which can be used in clinical medicine for the control of the chronic complications of diabetes. (R)-6- Fluoro-4-ureidochroman-4-carboxylic acid and its racemic modification are by-products from the production of sorbinil from 6-fluoro-4-chromanone.

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