Abstract
An effective synthesis strategy for the preparation of 1'H-spiro[indene-1,2'-quinoxaline] has been developed. This involves a Rh(III)-catalyzed [3 + 2]-annulation of quinoxalines with alkynylcyclobutanols. The developed protocol offers a straightforward method for the preparation of versatile heterocyclic compounds with a four-membered ring and is compatible with a wide range of functional groups.
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