Pyridine-borane complexes were synthesized from 2-arylpyridines through an electrophilic aromatic borylation reaction with BBr(3). The intermediate 2-(2-dibromoborylaryl)pyridines were stable enough to be handled in air and served as the synthetic platform for variously substituted pyridine-borane complexes. This facile method would be useful for the synthesis of aza-π-conjugated materials having boron-nitrogen coordination.

A palladium-catalyzed oxidative C–H coupling reaction of benzanilides using molecular oxygen as the oxidant furnishes phenanthridinones. The palladium-catalyzed reaction in combination with simple derivatization provides an efficient access to a phenanthridine skeleton starting from readily available benzoic acids and anilines.

Cationic gold(I) complexes having Buchwald-type biarylphosphines effectively catalyzed twofold hydroarylation of 2,6-dialkynylbiphenyls to construct pyrene skeletons.

3‐Formylindol reagiert mit dem Isocyanessigester (II) nicht zum Kondensationsprodukt (III).