NITRATION OF BENZO CROWN ETHERS WITH POTASSIUM NITRATE IN POLYPHOSPHORIC ACID

А. Д. Гребенюк, С. А. Андреев, И. А. Стемпневская, М. Г. Левкович, А. К. Ташмухамедова

Abstract


A general method for the nitration of benzo crown ethers with potassium nitrate in polyphosphoric acid has been developed. Mono- and dinitro derivatives of benzo-12-crown-4, benzo-15-crown-5, dibenzo-18-crown-6, and dibenzo-24-crown-8 have been prepared. The role of complex formation in the regioselective tendency for the nitration of dibenzo-18-crown-6 has been demonstrated.

Authors: A. D. Grebenyuk, S. A. Andreev, I. A. Stempnevskaya, M. G. Levkovich, and A. K. Tashmukhamedova.

English Translation in Chemistry of Heterocyclic Compounds, 2000, 36 (12), pp 1449-1456

http://link.springer.com/article/10.1023/A%3A1017530731688


Keywords


benzo crown ethers; potassium nitrate; polyphosphoric acid; nitration

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