Palladium-Catalyzed Oxidative Insertion of Carbon Monoxide to N-Sulfonyl-2-aminobiaryls through C–H Bond Activation: Access to Bioactive Phenanthridinone Derivatives in One Pot
摘要:
Palladium-catalyzed oxidative carbonylation of N-sulfonyl-2-aminobiaryls through C-H bond activation and C-C, C-N bond formation under TFA-free and milder conditions has been developed. The reaction tolerates a variety of substrates and provides biologically important phenanthrldlnone derivatives in yields up to 94%.
Preparation of phenanthrenes from ortho-amino-biphenyls and alkynes via base-promoted homolytic aromatic substitution
作者:Marcel Hartmann、Constantin Gabriel Daniliuc、Armido Studer
DOI:10.1039/c4cc10063h
日期:——
transition-metal-free phenanthrene synthesis starting from readily accessible ortho-amino-biaryls is presented. The biarylamines are in situ transformed into the corresponding diazonium salts which upon single electron reduction give the corresponding aryl radicals. Addition to an alkyne and subsequent base promoted homolyticaromaticsubstitution (BHAS) provide phenanthrenes in moderate to good yields