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ChemicalBook CAS DataBase List 2-Fluoro-4-nitrophenol
403-19-0

2-Fluoro-4-nitrophenol synthesis

11synthesis methods
-

Yield:-

Reaction Conditions:

with hydrogenchloride in (2S)-N-methyl-1-phenylpropan-2-amine hydrate;dimethyl sulfoxide

Steps:

9.A EXAMPLE 9
(A) 57% Sodium hydride (33.7 g.) was dissolved in one liter of dimethyl sulfoxide at 70° C. When a clear solution resulted there was added slowly, with stirring, aldoxime (97.4 g.) and to the resulting pasty mixture was added slowly, with vigorous stirring, 3,4-difluoronitrobenzene (63.6 g.) and stirring was continued two hours at 35°-40° C. The reaction mixture was poured into ice water containing 80 ml. concentrated hydrochloric acid, extracted with ether and the ether solution was extracted with dilute sodium hydroxide. The alkaline extract was acidified, extracted with ether, and the ether was evaporated to give 44.5 g. of crystalline 3-fluoro-4-hydroxynitrobenzene.

References:

Sterling Drug Inc. US4224335, 1980, A

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