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Reversal of polarity by catalytic SET oxidation: Synthesis of azabicyclo[: M. n.0]alkanes via chemoselective reduction of amidines
K. Devarahosahalli Veeranna, K. Kanti Das,
Published in Royal Society of Chemistry
PMID: 33885121
Volume: 19
Issue: 18
Pages: 4054 - 4059
A one-pot catalytic method has been developed for the stereoselective synthesis of cyclopropane-fused cyclic amidines using CuBr2/K2S2O8 as an efficient single electron transfer (SET) oxidative system. The generality of this mild method is demonstrated with a wide variety of substrates to furnish pharmaceutically important amidines containing aza-bicyclic and novel aza-tricyclic frameworks in very good yields. A chemoselective reduction of cyclic amidines to 2-/3-azabicyclo[m.n.0]alkanes and octahydroindoles has been developed using a NaBH4/I2 reagent system. The synthetic scope of the chemoselective reduction of the amidine functionality has been exemplified in the stereoselective synthesis of an iminosugar based (±)-epiquinamide analogue. This journal is © The Royal Society of Chemistry.
About the journal
JournalData powered by TypesetOrganic and Biomolecular Chemistry
PublisherData powered by TypesetRoyal Society of Chemistry