QUATERNIZATION OF ELECTRON-DEFICIENT PYRIDINES CONTAINING TWO ELECTRON-WITHDRAWING SUBSTITUENTS
DOI:
https://doi.org/10.1007/21Keywords:
ethoxycarbonylnitropyridines, acetylnitropyridines, cyanonitropyridines, quaternization, nitropyridinium saltsAbstract
Methyl triflate is an efficient agent for the quaternization of nitropyridines containing an additional electron-withdrawing substituent. When triethyloxonium hexachloroantimonate is used as the quaternizing agent, b-elimination occurs with formation of protic pyridinium salt and ethylene.
Authors: O. D. Mit'kin and M. A. Yurovskaya.
English Translation in Chemistry of Heterocyclic Compounds, 2000, 36 (1), pp 47-48
http://link.springer.com/article/10.1007/BF02256843