An efficient synthesis of indoles via a CuMgAl-LDH-catalyzed cyclization of 2-alkynylsulfonanilides
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DOI: 10.1016/j.tetlet.2018.09.009
Abstract: Abstract A highly efficient method for the synthesis of indoles has been successfully developed via a CuMgAl-LDH-catalyzed intramolecular annulation reaction of 2-alkynylsulfonanilides. This CuMgAl-LDH catalyst features facile preparation, recovery, and reuse at least seven times… read more here.
Keywords: via cumgal; cumgal ldh; efficient synthesis; synthesis indoles ... See more keywords
An organophotoredox-catalyzed redox-neutral cascade involving N-(acyloxy)phthalimides and allenamides: synthesis of indoles.
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DOI: 10.1039/d1cc05397c
Abstract: An organophotoredox-catalyzed radical cascade of allenamides and alkyl N-(acyloxy)phthalimides for the synthesis of indoles is documented. The method features mild and robust reaction conditions, and exhibits broad scope. The tandem process enriches the limited repertoire… read more here.
Keywords: acyloxy phthalimides; organophotoredox catalyzed; cascade; synthesis indoles ... See more keywords
TfOH-promoted synthesis of indoles and benzofurans involving cyclative transposition of vinyl ketone.
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DOI: 10.1039/d2cc03730k
Abstract: A metal-free approach to construct indole rings from vinylogous amides derived from o-alkynylanilines involving a cyclization, retro-aza-Michael reaction and amine trapping cascade is reported here. This atom-economical transformation has been extended to synthesize benzofuran derivatives… read more here.
Keywords: benzofurans involving; involving cyclative; indoles benzofurans; synthesis indoles ... See more keywords
Annulation of enaminones with quinonediimides/quinoneimides for selective synthesis of indoles and 2-aminobenzofurans.
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DOI: 10.1039/d3cc01687k
Abstract: The annulation reactions of enaminones with quinonediimides/quinoneimides for the selective synthesis of indoles and 2-aminobenzofurans have been realized. With Zn(II) catalysis, quinonediimides reacted with enaminones to give indoles via HNMe2-elimination-based aromatization. With Fe(III) catalysis, the… read more here.
Keywords: selective synthesis; quinonediimides quinoneimides; synthesis indoles; quinoneimides selective ... See more keywords