Moczulski M, Deredas D, Kuśmierek E, Albrecht Ł, Albrecht A. Synthesis of cyclopent-1-enecarbonitriles
via a tandem Giese/HWE reaction initiated by visible light.
Chem Commun (Camb) 2023;
59:4372-4375. [PMID:
36946322 DOI:
10.1039/d2cc06543f]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
In the manuscript, a novel method for the preparation of cyclopent-1-enecarbonitriles via tandem Giese/HWE reaction initiated by visible light in the presence of fac-Ir(ppy)3 as a photocatyst has been described. The cascade reactivity combining radical and polar processes has proven applicable for a wide range of N-(acyloxy)phthalimides (which serve as precursors of the corresponding radicals) as well as diethyl (E)-(1-cyano-2-arylvinyl)phosphonates. The key parameters responsible for the success of the described strategy are: visible light, 1 mol% of photoredox catalyst, base, anhydrous solvent and inert atmosphere. The reaction results in new sp3-sp3 and sp2-sp2 carbon-carbon bonds formation under mild conditions.
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