caa a22 4500 467919720 CHVBK 20180406152913.0 cr unu---uuuuu 170328e20061201xx s 000 0 eng 10.1007/s00706-006-0550-9 doi (NATIONALLICENCE)springer-10.1007/s00706-006-0550-9 Efficient Synthesis of Nitroflavones by Cyclodehydrogenation of 2′-Hydroxychalcones and by the Baker-Venkataraman Method [Elektronische Daten] [Ana I. R. N. A. Barros, Artur M. S. Silva] Summary.: Several nitroflavone derivatives were synthesized by cyclodehydrogenation of 2′-hydroxychalcones and by the Baker-Venkataraman approach, starting from 2′-hydroxyacetophenones and benzoic acid derivatives. Nitroflavones synthesised by the first synthetic approach were obtained in better global yields than those obtained by the later method. The structures of all new compounds were elucidated by microanalyses, 1D and 2D NMR, IR, and mass spectroscopic measurements. Springer-Verlag, 2006 Keywords. Nitroflavones nationallicence Cyclodehydrogenation nationallicence 2′-Hydroxychalcones nationallicence Baker-Venkataraman method nationallicence NMR spectroscopy nationallicence Barros Ana I. R. N. A. Chemistry Department, University of Trás-os-Montes e Alto Douro, Vila Real, Portugal aut Silva Artur M. S. Chemistry Department, University of Aveiro, Aveiro, Portugal aut Monatshefte für Chemie / Chemical Monthly Springer-Verlag 137/12(2006-12-01), 1505-1528 0026-9247 137:12<1505 2006 137 706 https://doi.org/10.1007/s00706-006-0550-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00706-006-0550-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Barros Ana I. R. N. A. Chemistry Department, University of Trás-os-Montes e Alto Douro, Vila Real, Portugal aut NATIONALLICENCE 700 1- Silva Artur M. S. Chemistry Department, University of Aveiro, Aveiro, Portugal aut NATIONALLICENCE 773 0- Monatshefte für Chemie / Chemical Monthly Springer-Verlag 137/12(2006-12-01), 1505-1528 0026-9247 137:12<1505 2006 137 706 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer