The synthesis of cyclohepta[b]indole derivatives through the dearomative (4 + 3) cycloaddition reaction of 2-vinylindoles or 4H-furo[3,2-b]indoles with in situ generated oxyallyl cations is reported. Oxyallyl cations are generated from α-bromoketones in the presence of a base and a perfluorinated solvent. Cyclohepta[b]indole scaffolds are obtained under mild reaction conditions, in the absence of expensive catalysts, starting from simple reagents, in good to excellent yields and with complete diasteroselectivity. Preliminary expansion of the scope to 3-vinylindoles and to aza-oxyallyl cations is reported.
Synthesis of Cyclohepta[b]indoles by (4 + 3) Cycloaddition of 2-Vinylindoles or 4H-Furo[3,2-b]indoles with Oxyallyl Cations / V. Pirovano, E. Brambilla, A. Moretti, S. Rizzato, G. Abbiati, D. Nava, E. Rossi. - In: JOURNAL OF ORGANIC CHEMISTRY. - ISSN 1520-6904. - 85:5(2020 Mar 06), pp. 3265-3276.
Titolo: | Synthesis of Cyclohepta[b]indoles by (4 + 3) Cycloaddition of 2-Vinylindoles or 4H-Furo[3,2-b]indoles with Oxyallyl Cations |
Autori: | BRAMBILLA, ELISA (Secondo) NAVA, DONATELLA (Penultimo) ROSSI, ELISABETTA (Ultimo) (Corresponding) |
Settore Scientifico Disciplinare: | Settore CHIM/06 - Chimica Organica |
Data di pubblicazione: | 6-mar-2020 |
Rivista: | |
Tipologia: | Article (author) |
Data ahead of print / Data di stampa: | 6-feb-2020 |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1021/acs.joc.9b03117 |
Appare nelle tipologie: | 01 - Articolo su periodico |
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