ArticleRSC advances2026
Synergistic Rh(ii)/Cu(ii)/PybBox catalysis enables modular access to propargylated benzofuranone and indanone scaffolds.
Article in RSC advances, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Herein, we report a synergistic Rh(ii)/Cu(ii)/PyBox catalytic system for the coupling of α-diazo-β-keto esters with propargyl benzoates, enabling modular synthesis of propargylated benzofuranone and indanone derivatives featuring quaternary carbon centers-a motif prevalent in bioactive molecules and functional materials. This transformation proceeds under mild conditions with high efficiency, affording yields of up to 93% and exhibiting broad functional group tolerance toward halogens, electron-donating/withdrawing groups, heteroaryls, and sterically hindered substituents. Notably, the terminal alkyne moiety in products serves as a versatile handle for late-stage derivatization
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