Synlett 2018; 29(07): 885-889
DOI: 10.1055/s-0037-1609201
letter
© Georg Thieme Verlag Stuttgart · New York

Diastereoselective One-Pot Tandem Synthesis of Chromenopyridodiazepinones through 1,4- and 1,6-Aza-Conjugate Additions/Heterocyclizations

Abdelghani Bouchama
a   Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques (CRAPC), BP 384, Bou-Ismail, 42004 Tipaza, Algeria
b   Laboratoire de Structure, Elaboration et Application des Matériaux Moléculaires (SEA2M), Faculté des Sciences et de la Technologie, BP 188, Université Abdelhamid Benbadis, Mostaganem, Algeria
,
Ridha Hassaine
a   Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques (CRAPC), BP 384, Bou-Ismail, 42004 Tipaza, Algeria
c   Laboratoire de Catalyse et Synthèse en Chimie Organique, Faculté des Sciences, Université de Tlemcen, BP 119, 13000 Tlemcen, Algeria
,
Oualid Talhi*
a   Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques (CRAPC), BP 384, Bou-Ismail, 42004 Tipaza, Algeria
d   QOPNA and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal   Email: oualid.talhi@ua.pt   Email: artur.silva@ua.pt
,
Nadia Taibi
a   Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques (CRAPC), BP 384, Bou-Ismail, 42004 Tipaza, Algeria
,
Ricardo F. Mendes
e   CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
,
Fillipe A. Almeida Paz
e   CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
,
Khaldoun Bachari
a   Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques (CRAPC), BP 384, Bou-Ismail, 42004 Tipaza, Algeria
,
d   QOPNA and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal   Email: oualid.talhi@ua.pt   Email: artur.silva@ua.pt
› Author Affiliations

Thanks are due to University of Aveiro and FCT/MEC for financial support to the QOPNA research project (FCT UID/QUI/00062/2013), to the CICECO-Aveiro Institute of Materials (POCI-01-0145-FEDER-007679; FCT UID/CTM/50011/2013), financed by national funds, and, when appropriate, co-financed by FEDER under the PT2020 Partnership Agreement, and to the Portuguese NMR Network. We would like also to thank FCT/MEC and the General Directorate for Scientific Research and Technological Development (DGRSDT) of Algeria and Agence Thématique de Recherche en Sciences et Technologie ATRST for ­approving the co-financed bilateral project PT-DZ/0005. We further wish to thank CICECO for funding the purchase of the single-crystal X-ray diffractometer.
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Publication History

Received: 19 November 2017

Accepted after revision: 20 December 2017

Publication Date:
30 January 2018 (online)


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Abstract

We report an efficient one-pot synthesis of a novel series of chromenopyridodiazepinone polyheterocycles by a catalyst-free nucleo­philic addition of ethane-1,2-diamine to (E,E)-3-[3-(2-hydroxyphenyl)-3-oxoprop-1-en-1-yl]-2-styrylchromones at room temperature under mild conditions. The reaction proceeds by a tandem process involving 1,4- and 1,6-aza-conjugate additions of one amino group of ethane-1,2-diamine to the α,β-unsaturated (3-oxoprop-1-en-1-yl) and the α,β,γ,δ-diunsaturated (2-styrylchromone) carbonyl system of the precursor, followed by imine condensation of the remaining amino group to generate the chromenopyridodiazepinone polyheterocycle. All compounds were characterized by means of one- and two-dimensional NMR spectroscopy and single-crystal X-ray crystallography.

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