Chen Qi-fan
2010
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Journal
Journal of Eastern Liaoning University
Abstract
Firstly,5-Bromo-nicotinic acid,the initial reactant,was chlorinated with SOCl2,thus preparing 5-Bromo-nicotinate with 90% yield;secondly,5-Bromo-nicotinamide was prepared from the reaction of 5-Bromo-nicotinate with ammonium aqueous at 0~10 ℃ with 79% yield;thirdly,with POCl3 as the oxidant,5-Bromo-nicotinonitrile was obtained by 5-Bromo-nicotinamide via a reflux reaction at 110 ℃ with 68% yield.The total yield was more than 48% by this method.The structures of intermediates and target product were characterized with FT-IR and 1H NMR.