An enantioselective aza-Piancatelli rearrangement has been developed using a chiral Brønsted acid based on pentacarboxycyclopentadiene (PCCP). This reaction provides rapid access to valuable chiral 4-amino-2-cyclopentenone building blocks from readily available starting material and is operationally simple.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6633596 | PMC |
| http://dx.doi.org/10.3762/bjoc.15.160 | DOI Listing |
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