Convergent synthetic route to pyrano-[2,3-a]carbazole by multicomponent reaction

摘要

NaHCO _3 has been found to be an efficient base catalyst for the synthesis of pyrano[2,3-a]carbazoles from 1-hydroxycarbazoles by multicomponent reaction using solvent-free grinding methods. In this case, the products have been found in good yields, without formation of any side product.