Feng Xiao-liang
2006
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Journal
Chinese Journal of Synthetic Chemistry
Abstract
4-Chloro-2,3-dimethylpyridineN-oxide(4) were synthesized from 2,3-dimethylpyridine by the reaction of oxidation(sodium tungstate as a catalyst,hydrogen peroxide as a oxidant,yield of(96.5%)),nitration(65% nitric acid as a nitrating agent,yield of 86.3%,purity of 99.0%) and chlorination(acetyl chloride as a chloridizing agent,yield of 86.8%,purity of 98.6%).The overall yield reached 72.2%.The structure of 4 was identified by ~1H NMR.