Metal Salt Mediated Radical Reactions of 2-Substituted-1,4-naphthoquinones.-Silver-catalyzed reaction of hydroxymethyl-substituted naphthoquinones (I) with -oxocarboxylic acids (II) provides access towards naphtho-fused furan derivatives (III). In a similar manner, aminomethyl-substituted naphthoquinones (IV) afford naphtho-fused pyrroles (V). Interestingly, manganese-mediated reaction of naphthoquinones (IV) with -keto ester (VI) gives the same naphtho-fused pyrroles (V) instead of the expected naphtho-fused pyridine derivatives. -(LIN, Z.-Y.; CHEN, Y.-L.; LEE, C.-S.; CHUANG*, C.-P.; Eur.

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