Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/5401
Straight access to highly fluorescent angular indolocarbazoles via merging Au- and Mo-catalysis
Organic Chemistry Frontiers. 2020, v. 7, n. 14, p. 1869-1877
Royal Society of Chemistry
Fecha de publicación
A straightforward and efficient synthesis of the two less explored types of indolocarbazoles has been developed. Two different processes for the carbazole nucleus preparation, a gold-catalysed regioselective cyclization followed by the dioxomolybdenum-catalysed version of Cadogan reductive cyclization, enables the sequential construction of two carbazole cores. The procedure features total regioselectivity and high overall yields. The required starting α-indol-3-ylalkyl propargylic alcohols are easily and efficiently accessed from commercially available reagents. In addition, the photoluminescent properties of two indolo[2,3-c]carbazoles, with fluorescence quantum yields around 0.7, have been studied.
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