Abstract
AbstractTreatment of readily available o‐(buta‐1,3‐diyn‐1‐yl)‐substituted N‐aryl ureas with Echavarren′s gold(I) catalyst under microwave irradiation affords, via a twofold cyclization process, pyrimido[1,6‐a]indol‐1(2H)‐ones.
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