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Abstract A transformation of fluxional into configurationally stable axially chiral N‐arylpyrroles was achieved with a highly atroposelective electrophilic aromatic substitution catalyzed by a chiral‐at‐metal rhodium Lewis acid. Specifically, N‐arylpyrroles were alkylated with N‐acryloyl‐1H‐pyrazole electrophiles in up to 93 % yield and with up to >99.5 % ee , and follow‐up conversions reveal the synthetic utility of this new method.
Communication Asymmetric Photocatalysis by Intramolecular Hydrogen‐Atom Transfer in Photoexcited Catalyst–Substrate Complex Prof. Dr. K. N. Houk Corresponding Author E-mail address: houk@chem.ucla.edu Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095-1569 USA Search for more papers by this author Prof.
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