Person:
Lázaro Milla, Carlos

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First Name
Carlos
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Lázaro Milla
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https://hdl.handle.net/20.500.14352/82531
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Universidad Complutense de Madrid
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Ciencias Químicas
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    Cobalt(I)-Catalyzed (3 + 2 + 2) Cycloaddition between Alkylidenecyclopropanes, Alkynes, and Alkenes
    (Organic letters, 2023) Da Concepción, Eduardo; Mascareñas, José L.; López, Fernando; Lázaro Milla, Carlos; Fernández López, Israel
    Cobalt(I) catalysts equipped with bisphosphine ligands can be used to promote formal (3 + 2 + 2) intramolecular cycloadditions of enynylidenecyclopropanes of type 1. The method provides synthetically appealing 5,7,5-fused tricyclic systems in good yields and with complete diastereo- and chemoselectivity. Interestingly, its scope differs from that of previously reported annulations based on precious metal catalysts, specifically rhodium and palladium. Noticeably, density functional theory calculations confirm that the mechanism of the reaction is also different from those proposed for these other catalysts.