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  • Title: Expanding the scope of Mn(OAc)3-mediated cyclizations: synthesis of the tetracyclic core of tronocarpine.
    Author: Magolan J, Kerr MA.
    Journal: Org Lett; 2006 Sep 28; 8(20):4561-4. PubMed ID: 16986950.
    Abstract:
    Pyrroles, indoles, and surprisingly, indolines, when equipped with a pendant malonyl group on the nitrogen atom, were effective substrates in a Mn(III)-mediated oxidative cyclization reaction, yielding the 1,2-annulated products in good to excellent yields. When indole acetonitrile was used as a substrate this method provided a rapid synthesis of a tetracyclic tronocarpine subunit.
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