Phenanthrene Synthesis by Palladium-Catalyzed Benzannulation with o-Bromobenzyl Alcohols through Multiple Carbon-Carbon Bond Formations

Masayuki Iwasaki, Yasuhiro Araki, Yasushi Nishihara

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)

    Abstract

    A palladium-catalyzed benzannulation with o-bromobenzyl alcohols enabled the facile construction of phenanthrene skeletons via the sequential multiple carbon-carbon bond formations. A variety of multisubstituted phenanthrenes were synthesized by the reaction of (Z)-β-halostyrenes with o-bromobenzyl alcohols as well as by the three-component coupling of alkynes, aryl bromides, and o-bromobenzyl alcohols. The electron-deficient phosphine ligand played an important role to control the sequential oxidative addition of two different organic halides employed, which realized the selective formation of the desired phenanthrenes in good yields. This synthetic protocol was also applicable to the synthesis of the highly fused polycyclic aromatic hydrocarbons such as tetraphenes.

    Original languageEnglish
    Pages (from-to)6242-6258
    Number of pages17
    JournalJournal of Organic Chemistry
    Volume82
    Issue number12
    DOIs
    Publication statusPublished - Jun 16 2017

    ASJC Scopus subject areas

    • Organic Chemistry

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