Synthesis, metal ion binding, and photochromic properties of benzo- and naphthopyrans annelated by crown ether moieties
作者:Sergey V. Paramonov、Vladimir Lokshin、Artem B. Smolentsev、Evgeni M. Glebov、Valeri V. Korolev、Stepan S. Basok、Konstantin A. Lysenko、Stéphanie Delbaere、Olga A. Fedorova
DOI:10.1016/j.tet.2012.07.029
日期:2012.9
Combining a photochromic chromene with a crown ether moiety results in systems in which photochromism and ionophoric properties could significantly influence each other. In this paper, we report the synthesis of several chromenes annelated by 15(18)-crown-5(6) ethers. The approach involves the building of the photochromic fragment upon the initial crown ether via phenols. The two main routes for chromene