Camedda N, Bigi F, Maggi R, Maestri G. Sequential Strategies to Trigger Mild Dearomative Diels-Alder Cyclizations.
Org Lett 2023;
25:2233-2237. [PMID:
36961988 DOI:
10.1021/acs.orglett.3c00454]
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Abstract
Dihydronaphthalenes are present in several functional molecules, but their assembly is challenging. However, a sequential strategy can induce the key annullation of an alkyne with a vinylarene under mild conditions. Products form in good yields, with ample functional tolerance via domino nucleophilic substitution and dearomative Diels-Alder and ene reactions. DFT modeling data show that alkali cations are crucial to ensure a smooth dearomative cyclization on the in situ generated intermediates.
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