Journal
ORGANIC LETTERS
Volume 22, Issue 19, Pages 7617-7621Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.0c02828
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Funding
- National Natural Science Foundation of China [21772126, 21961132004, 21931006]
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An enantioselective cascade reaction of N-alkylpyridinium and -quinolinium salts with o-hydroxybenzylideneacetones to access fused polyheterocycles through cross dienamine-mediated addition followed by trapping of the dearomatized enamine-type intermediates and aminal formation has been developed. A cascade assembly of N-benzyl-4-methylpyridinium salt and cyclic 2,4-dienones is further disclosed to give bridged frameworks via repetitive dearomatization and aromatization activation.
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