Formaldehyde-Extruding Homolytic Aromatic Substitution via C→O Transposition: Selective 'Traceless-Linker' access to Congested Biaryl Bonds.

Formaldehyde-Extruding Homolytic Aromatic Substitution via C→O Transposition: Selective 'Traceless-Linker' access to Congested Biaryl Bonds.