caa a22 4500 467991103 CHVBK 20180323112544.0 cr unu---uuuuu 170328e19900901xx s 000 0 eng 10.1007/BF00472493 doi (NATIONALLICENCE)springer-10.1007/BF00472493 Reaction of 3-formylchromone with methyl- and methylene-active azocycles [Elektronische Daten] [A. Tolmachev, L. Shulezhko, Yu. Briks, A. Kachkovskii] The reaction of 3-formylchromone with quaternary salts of nitrogen heterocycles containing active methyl or methylene groups was investigated. It is shown that the compounds obtained can be used in the synthesis of merocyanine dyes containing an o-hydroxybenzoyl substituent in the polymethine chain. Dicarbocyanines with such a substituent were not isolated, evidently because of the high electrophilicity of the polymethine chain and the ease of formation of a six-membered heteroring. Plenum Publishing Corporation, 1991 Tolmachev A. Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev aut Shulezhko L. Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev aut Briks Yu Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev aut Kachkovskii A. Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev aut Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Plenum Publishers 26/9(1990-09-01), 1060-1065 0009-3122 26:9<1060 1990 26 10593 https://doi.org/10.1007/BF00472493 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00472493 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tolmachev A. Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev aut NATIONALLICENCE 700 1- Shulezhko L. Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev aut NATIONALLICENCE 700 1- Briks Yu Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev aut NATIONALLICENCE 700 1- Kachkovskii A. Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev aut NATIONALLICENCE 773 0- Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Plenum Publishers 26/9(1990-09-01), 1060-1065 0009-3122 26:9<1060 1990 26 10593 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer