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  • Title: Simple and versatile catalytic system for N-alkylation of sulfonamides with various alcohols.
    Author: Zhu M, Fujita K, Yamaguchi R.
    Journal: Org Lett; 2010 Mar 19; 12(6):1336-9. PubMed ID: 20184342.
    Abstract:
    A simple and versatile catalytic system for N-alkylation of sulfonamides with various alcohols based on a catalytic hydrogen transfer reaction has been developed under a low catalyst loading of [Cp*IrCl(2)](2) (0.050-1.5 mol %) in the presence of t-BuOK. A variety of N-alkylated sulfonamides were prepared in good to excellent yields. Mechanistic investigations revealed that the key catalytic species in the present system is a sulfonylimido-bridged unsaturated diiridium complex [(Cp*Ir)(2)(mu-NTs)(2)].
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