Brønsted Acid Catalyzed Enantioselective Assemblyof Spirochroman-3,3-oxindoles
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DOI: 10.1021/acs.orglett.0c00587.s001
Abstract: An enantioselective cyclization of diazoindolinones with o-hydroxymethyl chalcones has been established by a cooperative dirhodium complex and chiral phosphonic acid catalysis under mild conditions. This reaction is the first example of catalytic asymmetric intramolecular Michael-type… read more here.
Keywords: spirochroman oxindoles; nsted acid; spirochroman; catalyzed enantioselective ... See more keywords