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  • Title: Direct conversion of alcohols to acetals and H(2) catalyzed by an acridine-based ruthenium pincer complex.
    Author: Gunanathan C, Shimon LJ, Milstein D.
    Journal: J Am Chem Soc; 2009 Mar 11; 131(9):3146-7. PubMed ID: 19216551.
    Abstract:
    The crystallographically characterized ruthenium complex RuHCl(A-(i)Pr-PNP)(CO) (1) [A-(i)Pr-PNP = 4,5-bis-(diisopropylphosphinomethyl)acridine], which bears a nonplanar acridine moiety, catalyzes in a neutral medium the transformation of primary alcohols to the corresponding acetals with the liberation of H(2). In the presence of base, complex 1 catalyzes the dehydrogenative coupling of alcohols to form esters. Acetal formation may involve hemiacetal dehydration to form an enol ether followed by alcohol addition to the double bond.
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