Hydroxyamine hydrochloride → HCID 136359213, compound

Participants

Reaction Steps

A solution of 31.8 g of 2,3-dichloro-4-hydroxy-2'-fluoro-benzophenone and 15.3 g of hydroxylamine hydrochloride in 150 ml of pyridine is refluxed for 64 hours. Thereafter, the pyridine is evaporated under vacuum and a 5% aqueous hydrochloric acid solution is added. The acidified solution is extracted with ethyl acetate and the combined extracts are dried before being concentrated to dryness. The resulting solid is recrystallized from an aqueous ethanol solution to yield the product 2,3-dichloro-4-hydroxy-2'-fluorobenzophenone oxime with a melting point of 168° to 175° C.

Provenance & Evidence