Synthesis 2012; 44(21): 3392-3398
DOI: 10.1055/s-0032-1316777
paper
© Georg Thieme Verlag Stuttgart · New York

Functionalization of Chromones through an Aza-Baylis–Hillman-Type Reaction

Michael A. Terzidis
a   Department of Chemistry, Laboratory of Organic Chemistry, University of Thessaloniki, 54124 Macedonia, Greece
,
Vassilios G. Tsiaras
a   Department of Chemistry, Laboratory of Organic Chemistry, University of Thessaloniki, 54124 Macedonia, Greece
,
Julia Stephanidou-Stephanatou*
a   Department of Chemistry, Laboratory of Organic Chemistry, University of Thessaloniki, 54124 Macedonia, Greece
,
Constantinos A. Tsoleridis*
a   Department of Chemistry, Laboratory of Organic Chemistry, University of Thessaloniki, 54124 Macedonia, Greece
,
Vassilis Psycharis
b   Institute of Materials Science, NCSR Demokritos, 15310 Aghia Paraskevi Attikis, Greece   Fax: +30(2310)997679   Email: ioulia@chem.auth.gr   Email: tsolerid@chem.auth.gr
,
Catherine P. Raptopoulou
b   Institute of Materials Science, NCSR Demokritos, 15310 Aghia Paraskevi Attikis, Greece   Fax: +30(2310)997679   Email: ioulia@chem.auth.gr   Email: tsolerid@chem.auth.gr
› Author Affiliations
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Publication History

Received: 17 July 2012

Accepted after revision: 22 August 2012

Publication Date:
17 September 2012 (online)


Abstract

The synthesis of (N,N′-bisalkoxycarbonyl)hydrazinochromones via the aza-Baylis–Hillman reaction of formylchromones and azodicarboxylates is reported. A plausible mechanistic scheme for the formation of these compounds, involving the chromone formyl group elimination, is proposed. Conformational analysis was performed by DFT calculations. The structure of one example was confirmed by XRD investigation. Full assignment of all 1H and 13C NMR chemical shifts has been unambiguously achieved.

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