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Published in 2017 at "Chemical communications"
DOI: 10.1039/c7cc01653k
Abstract: An organocatalytic asymmetric [3+2] cycloaddition of 3-amino oxindole-based azomethine ylides and α,β-ynones has been developed. This reaction afforded spiro[dihydropyrrole-2,3'-oxindole] products in high chemical yields with excellent stereoselectivities (up to 99% yields, >20 : 1 dr and >99%…
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Keywords:
based azomethine;
oxindole based;
amino oxindole;
cycloaddition amino ... See more keywords
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Published in 2020 at "RSC Advances"
DOI: 10.1039/c9ra10463a
Abstract: A convenient and efficient method for the regioselective macrocyclization of triazole bridged spiropyrrolidine-oxindole, and bis-spiropyrrolizidine-oxindole derivatives was accomplished through intra and self-intermolecular [3 + 2] cycloaddition of azomethine ylides. The chalcone isatin precursors 9a–i required…
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Keywords:
oxindole;
spiropyrrolidine oxindole;
spiropyrrolizidine oxindole;
cycloaddition azomethine ... See more keywords