Zeolite-assisted nitration of biphenyl using nitric acid

Zeolite-assisted nitration of biphenyl using nitric acid The nitration process using 95 % nitric acid instead of the classical nitric acid–sulfuric acid system appears to be attractive and promising in the preparation of nitro compounds. The ratio of 2-nitrobiphenyl (2a) isomer to 4-nitrobiphenyl (2b) can reach 0.69 in a good yield of 78.42 %. The isomeric distribution of the product mononitrobiphenyl was found to be superior to traditional methods. Raising the ratio of 95 % nitric acid and biphenyl to 4:1, the yield of dinitration products can reach more than 78.08 %, as a mixture of 2,2′-dinitrobiphenyl (3a), 2,4′-dinitrobiphenyl (3b), and 4,4′-dinitrobiphenyl (3c). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Zeolite-assisted nitration of biphenyl using nitric acid

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Springer Netherlands
Copyright © 2013 by Springer Science+Business Media Dordrecht
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
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