Process for preparing 4,6-dinitroresorcinol

Details Process for preparing 4,6-dinitroresorcinol Process for preparing 4,6-dinitroresorcinol

C - Chemistry, Metallurgy

07

C

260/610.6

C07C 201/08 (2006.01) C07C 205/23 (2006.01)

Patent

CA 1307007

-17- Abstract of the Disclosure A method of nitrating resorcinol which is selective for the production of the 4,6-dinitro- resorcinol isomer. A resorcinol-based starting material is admixed with a nitrating solution from which sub- stantially all nitrogen dioxide and nitrous has been removed. The nitrating solution contains white fuming nitric acid, a nitrosonium ion control agent such as urea, and, optionally, concentrated sulfuric acid. The 4,6-dinitroresorcinol isomer is provided in yields of about 65-85% with minimal production of undesirable side products.

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