2026-08-30T16:44:14Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/39142021-11-10T09:38:24Zcom_10259_3593com_10259_5086com_10259_2604col_10259_3594

Álvarez Manuel, Estela García García, Patricia Fernández Rodríguez, Manuel A. Sanz Díez, Roberto 2016-01-27T10:11:46Z 2016-01-27T10:11:46Z 2013-09 0022-3263 http://hdl.handle.net/10259/3914 10.1021/jo401388b A general and efficient synthesis of 4,9-dihydro- 1H-carbazoles from 3-allenylmethylindoles is reported. The process, catalyzed by a cationic gold(I) complex, involves a formal C2−H bond activation of the indole unit by reaction with the allene. The nature of the substituents at the allylic and terminal positions of the allene moiety has a crucial effect on the regioselectivity of the cyclization, which is also influenced by the catalyst and the solvent employed. Moreover, some evidence of the contribution of different reaction routes is provided, which led us to propose a plausible multipathway mechanism consistent with all of the results described. MICINN and FEDER (CTQ2010-15358 and CTQ2009-09949/BQU) for financial support. E.A. thanks MEC for an FPU predoctoral fellowship. P.G.-G. and M.A.F.-R. thank MICINN for "Juan de la Cierva" and "Ramon y Cajal" contracts This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of organic chemistry, copyright © American Chemical Society after peer review and technical editing by the publisher. application/pdf eng American Chemical Society Journal of organic chemistry. 2013, V. 78, n. 19, p. 9758–9771 http://dx.doi.org/10.1021/jo401388b info:eu-repo/grantAgreement/MICINN-FEDER/CTQ2010-15358 info:eu-repo/grantAgreement/MICINN-FEDER/CTQ2009-09949/BQU Química orgánica Chemistry, Organic Regioselective synthesis of elusive 4,9-Dihydro-1H-Carbazoles by gold-catalyzed cycloisomerization of 3-Allenylmethylindoles info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion info:eu-repo/semantics/openAccess