Method for producing 4-hydroxy-3-nitrobiphenyl

Details Method for producing 4-hydroxy-3-nitrobiphenyl Method for producing 4-hydroxy-3-nitrobiphenyl

C - Chemistry, Metallurgy

07

C

C07C 205/22 (2006.01) C07C 201/08 (2006.01)

Patent

CA 2405418

The invention relates to a method for producing 4-hydroxy-3-nitrobiphenyl on the basis of 4-hydroxybiphenyl by highly selective and effective nitration in the vicinal position to the phenolic hydroxy group, whereby the azotic acid used as the nitration reagent is added to the reaction system in a specific manner.

L'invention concerne un procédé permettant de produire du 4-hydroxy-3-nitrobiphényle à partir de 4-hydroxybiphényle, par nitration, en position voisine, en groupe hydroxyle phénolique, avec une sélectivité et un rendement élevés, la dose d'acide azotique utilisé comme agent de nitration étant ajoutée au système de réaction d'une manière spéciale.

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