Ru(II)-Catalyzed Decarbonylative Alkylation and Annulations of Benzaldehydes with Iodonium Ylides under Chelation Assistance.
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DOI: 10.1021/acs.orglett.2c01843
Abstract: A Ru(II)-catalyzed decarbonylative alkylation and annulation of salicylaldehydes and 2-aminobenzaldehydes with iodonium ylides has been developed for the synthesis of dibenzo[b,d]furans and NH-free carbazolones. The reaction proceeds smoothly under mild conditions with a low catalyst… read more here.
Keywords: alkylation annulations; catalyzed decarbonylative; iodonium ylides; decarbonylative alkylation ... See more keywords
Lewis Acid-Catalyzed [3 + 2]-Cyclization of Iodonium Ylides with Azadienes: Access to Spiro[benzofuran-2,2'-furan]-3-ones.
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DOI: 10.1021/acs.orglett.2c02660
Abstract: A highly regioselective synthesis of spiro[benzofuran-2,2'-furan]-3-ones has been explored via Lewis acid-catalyzed [3 + 2] cyclization of iodonium ylides with azadienes. The acidity of the Lewis acid was significantly strengthened with strong hydrogen bond donors,… read more here.
Keywords: lewis acid; spiro benzofuran; benzofuran furan; iodonium ylides ... See more keywords
Cobalt(II)–tetraphenylporphyrin-catalysed carbene transfer from acceptor–acceptor iodonium ylides via N-enolate–carbene radicals
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DOI: 10.1038/s41557-022-00905-4
Abstract: Square-planar cobalt(II) systems have emerged as powerful carbene transfer catalysts for the synthesis of numerous (hetero)cyclic compounds via cobalt(III)–carbene radical intermediates. Spectroscopic detection and characterization of reactive carbene radical intermediates is limited to a few… read more here.
Keywords: acceptor; carbene radical; carbene; iodonium ylides ... See more keywords
Rh(III)-Catalyzed Cascade Annulation Reaction of N,N-Dimethyl Enaminones with Iodonium Ylides to Give Substituted Isocoumarins
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DOI: 10.1039/d3nj02073h
Abstract: The assembly of isocoumarins starting from easily available N,N-dimethyl enaminones and iodonium ylides via a Rh(III)-catalyzed C−H bond activation/annulation cascade reaction is herein described. This protocol proceeds under mild conditions... read more here.
Keywords: iii catalyzed; enaminones iodonium; iodonium ylides; dimethyl enaminones ... See more keywords