- Asymmetric synthesis of substituted tropinones using the intramolecular mannich cyclization reaction and acyclic N-sulfinyl beta-amino ketone ketals.
Asymmetric synthesis of substituted tropinones using the intramolecular mannich cyclization reaction and acyclic N-sulfinyl beta-amino ketone ketals.
Organic letters (2009-03-13)
Franklin A Davis, Naresh Theddu, Paul M Gaspari
PMID19278245
RESUMO
Sulfinimine-derived, enantiopure N-sulfinyl beta-amino ketone ketals on hydrolysis give dehydropyrrolidine ketones that on treatment with (Boc)(2)O/DMAP afford substituted tropinones in good yield.
MATERIAIS