Synthesis of Phenanthridine and Quinoxaline Derivatives via Copper-Catalyzed Radical Cyanoalkylation

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Main observation and conclusionrnA copper-catalyzed radical cyclization of cyclobutanone oxime esters and vinyl azide is described.This method provides facile access to cyanoalkyl-substituted phenanthridines and quinoxalines with excellent isolated yields.Moreover,these reactions proceed under mild conditions with a board substrate scope and excellent functional group tolerance.
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