Functionalized 1,2-dihydronaphthalenes from the Cu(OTf) 2-catalyzed [4+2] cycloaddition of o-alkynyl(oxo)benzenes with alkenes

Naoki Asao, Taisuke Kasahara, Yoshinori Yamamoto

    Research output: Contribution to journalArticlepeer-review

    153 Citations (Scopus)


    The [4+2] cycloaddition reaction between o-alkynyl(oxo)benzene 1 and olefins 2 in the presence of a catalytic amount of Cu(OTf)2 afforded 1,2-dihydronaphthalene derivatives 3 bearing an oxo function at the 1-position. The reaction proceeds most probably through the formation of benzo[c]pyrylium cupric ate complex.

    Original languageEnglish
    Pages (from-to)3504-3506
    Number of pages3
    JournalAngewandte Chemie - International Edition
    Issue number30
    Publication statusPublished - 2003 Aug 4


    • Cycloaddition
    • Dihydronaphthalene
    • Lewis acids

    ASJC Scopus subject areas

    • Catalysis
    • Chemistry(all)

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