Tandem 6π-Azatriene Electrocyclization of Fused Amino-cyclopentenones: Synthesis of Functionalized Pyrrolo- and Indolo-quinoxalines.
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DOI: 10.1021/acs.orglett.1c02782
Abstract: A tandem 6π-azacyclization approach for the synthesis of diversified pyrrolo/indolo[1,2-a]quinoxalines from amino-cyclopentenones has been developed. The reaction proceeds through a trifluoroacetic-acid-mediated 6π-electrocyclization and concomitant opening of the cyclopentenone ring. The advantageous features of the developed… read more here.
Keywords: indolo quinoxalines; amino cyclopentenones; electrocyclization; pyrrolo indolo ... See more keywords
Enantioselective Excited-State Nazarov Reaction: A Relay Strategy of Electrocyclization and Parallel Kinetic Resolution.
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DOI: 10.1021/acs.orglett.4c04177
Abstract: We report herein the enantioselective photoinduced Nazarov reaction using a relay strategy of an electrocyclization, followed by parallel kinetic resolution (PKR). No enantioselectivity was observed during electrocyclization due to weak coordination between chiral ligands and… read more here.
Keywords: parallel kinetic; electrocyclization; nazarov reaction; relay strategy ... See more keywords