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Synthesis of -dispiro-iminolactones using bromo substituted -dicarbonyl phenanthraquinone

Mohammad Qandalee, Nad Ali Hasannataj, S.Mohammad Vahdat, Mohammad Alikarami

-Dispiro-iminolactones have been synthesized by the three component reaction between 3,6- dibromophenanthraquinone, dialkyl acetylenedicarboxylates and isocyanides via a one-pot mode in high yields. The method offers advantages such as ease of the work-up, high yields of products, mild reaction condition and short reaction times.