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oai:riubu.ubu.es:10259/54012021-11-02T12:05:30Zcom_10259_3593com_10259_5086com_10259_2604col_10259_3594

2020-08-17T10:49:57Z urn:hdl:10259/5401 Straight access to highly fluorescent angular indolocarbazoles via merging Au- and Mo-catalysis Martínez Lara, Fernando Suárez, Anisley Suarez Pantiga, Samuel Tapia Estévez, M" José Sanz Díez, Roberto 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. 2020-08-17T10:49:57Z 2020-08-17T10:49:57Z 2020-07 info:eu-repo/semantics/article http://hdl.handle.net/10259/5401 10.1039/D0QO00405G 2052-4129 eng Organic Chemistry Frontiers. 2020, v. 7, n. 14, p. 1869-1877 https://doi.org/10.1039/D0QO00405G info:eu-repo/grantAgreement/JCyL/BU291P18 info:eu-repo/grantAgreement/MICINN/CTQ2016-75023-C2-1-P info:eu-repo/semantics/openAccess Royal Society of Chemistry