Sun Guo-dong
2011
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Journal
Chinese Journal of Synthetic Chemistry
Abstract
1-Cyano-4-dimethylamino-1-ethoxycarbonyl-1,3-butadiene(4) was synthesized by the reaction of 1,1-diethoxyethane with Vilsmeier reagents,followed by condensation with ethyl cyanoacetate.2-Chloronicotinic acid in overall yield of 62% was synthesized by a two-step reaction of cyclization and hydrolyzation from 4.