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An enantioselective Friedel-Crafts alkylation/cyclization tandem reaction of 3-aminophenols with α,α-dicyanoolefins has been performed successfully using a chiral dinuclear zinc catalyst, leading to a range of chiral 2-amino-4H-chromenes (up to 98%… Click to show full abstract
An enantioselective Friedel-Crafts alkylation/cyclization tandem reaction of 3-aminophenols with α,α-dicyanoolefins has been performed successfully using a chiral dinuclear zinc catalyst, leading to a range of chiral 2-amino-4H-chromenes (up to 98% yield and >99% ee). To the best of our knowledge, this is the first asymmetric example of the dinuclear zinc-catalysed functionalization of aromatic C(sp2)-H bonds.
Keywords:
crafts alkylation;
aminophenols dicyanoolefins;
dinuclear zinc;
zinc;
alkylation cyclization;
friedel crafts
Journal Title: Chemical communications
Year Published: 2021
Link to full text (if available)
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Journal Title: Chemical communications
Year Published: 2021
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!