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The first palladium-catalyzed diarylamine formation from nitroarenes and cyclohexanone derivatives using borrowed hydrogen is described. Various diarylamines were selectively obtained in good to excellent yields. The reaction tolerated a wide range of functionalities. The nitro reduction, cyclohexanone dehydrogenation, and imine formation and reduction were realized in a cascade without an external reducing reagent and oxidant. [ABSTRACT FROM AUTHOR]

A novel palladiumcatalyzed approach to 3-arylindoles was developedfrom indoles and cyclohexanones. Various cyclohexanones acted as arylsources via an alkylation and dehydrogenation sequence using molecularoxygen as the hydrogen acceptor. This method showed good regioselectivityand afforded 3-arylindoles as the sole products. [ABSTRACT FROM AUTHOR]

A novel approach for the synthesis of 2,3-diarylquinazolinones using iron as catalyst is described. Various 2-nitro-N-arylbenzamides reacted with benzylic alcohols to selectively give the corresponding products in the absence of external oxidant or reductant. [ABSTRACT FROM AUTHOR]