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Notice of Preparation (NOP) 1004 Nitration of pyridine N-oxide to 4-nitropyridine N-oxide; Bremen University, 2006, http://kriemhild.uft.uni- bremen.de/nop/en/instructions/pdf/1004_en.pdf.

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Article

An Autogenic Electromeric Effect as Inductor of an Abnormal Polarization in Pyridine N-Oxide

1Organic Chemistry Department, Faculty of Chemistry, National Autonomous University of Mexico, Mexico City (CDMX), México


World Journal of Chemical Education. 2017, Vol. 5 No. 1, 9-11
DOI: 10.12691/wjce-5-1-2
Copyright © 2017 Science and Education Publishing

Cite this paper:
Francisco Sánchez-Viesca, Reina Gómez. An Autogenic Electromeric Effect as Inductor of an Abnormal Polarization in Pyridine N-Oxide. World Journal of Chemical Education. 2017; 5(1):9-11. doi: 10.12691/wjce-5-1-2.

Correspondence to: Francisco  Sánchez-Viesca, Organic Chemistry Department, Faculty of Chemistry, National Autonomous University of Mexico, Mexico City (CDMX), México. Email: franviesca@yahoo.com

Abstract

Nitration of pyridine N-oxide gives 4-nitropyridine N-oxide. This is an abnormal nitrone reactivity involving an electronic back-donation. However, the textbooks treat this result in a very brief way, without any insight. Which are the experimental antecedents of this reaction? What theory was proposed to explain them? What reactivity is overturned by these proposals? How theory and practice can come to agree on this subject? All these questions will be treated and answered in this communication.

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