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oai:riubu.ubu.es:10259/42752022-04-29T12:02:48Zcom_10259_3593com_10259_5086com_10259_2604col_10259_3594

Formal [4 + 1] Cycloadditions of β,β-Diaryl-Substituted ortho-(Alkynyl)styrenes through Gold(I)-Catalyzed Cycloisomerization Reactions Sanjuán Cortázar, Ana María Virumbrales Ortiz, Cintia García García, Patricia Fernández Rodríguez, Manuel A. Sanz Díez, Roberto Chemistry, Organic Química orgánica Gold(I)-catalyzed cycloisomerization of β,β-diaryl-o-(alkynyl)- styrenes at 80 °C selectively yields dihydroindeno[2,1-a]indenes in a transformation that encompasses a formal [4 + 1] cycloaddition and takes place through a cascade 5-endo-cyclization−diene activation−iso-Nazarov cyclization. In addition, by performing the reaction at 0 °C, the same substrates exclusively give rise to benzofulvene derivatives, which have also been shown to be intermediates in the formation of the tetracyclics. Junta de Castilla y León (BU237U13) and Ministerio de Economıá y Competitividad (MINECO) and FEDER (CTQ2013-48937-C2-1-P) 2016-11-21T11:34:32Z 2017-03-04T03:45:07Z 2016-03 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 1523-7060 http://hdl.handle.net/10259/4275 eng ORGANIC LETTERS. 2016, V. 18, n. 5, p. 1072–1075 http://dx.doi.org/10.1021/acs.orglett.6b00191 info:eu-repo/semantics/openAccess application/pdf American Chemical Society