Palladium-Catalyzed Selective B(3)-Esterification of o-Carboranes with CO and Alcohols

Organic Letters, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Selective functionalization of o-carboranes has received tremendous attention, specifically in the regioselective modification ten chemically similar BH vertices within o-carborane cage. We disclose herein a strategy for palladium-catalyzed esterification B(3)-H bond using tungsten hexacarbonyl as carbon monoxide source. The corresponding functionalized were prepared moderate to very good yields with excellent regioselectivity.

Язык: Английский

Chelating 1,2-Bis(2′-picolyl)-o-carborane as a Supporting Ligand for Pd-Catalyzed Selective B(3,6)–H Difunctionalization of o-Carboranes

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Март 11, 2025

Transition metal catalyzed selective cage B–H functionalization of carboranes has made significant progress in recent years, giving rise to the efficient synthesis a large variety B-functionalized including alkenylation, arylation, alkynylation, borylation, hydroxylation, acyloxylation, amination, and halogenation. However, mechanisms these catalytic B–X coupling reactions are not well understood. Herein, we describe isolation characterization catalytically relevant o-carborane based palladium(II) metallacycle, disclosing details Pd-catalyzed o-carboranes. As result, highly B(3,6)-dihalogenation, -dimethylation, -diarylation o-carboranes have been achieved.

Язык: Английский

Pd-Catalysed synthesis of carborane sulfides from carborane thiols

Chemical Communications, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

Carboranes are an interesting class of aromatic molecules with icosahedral geometry, high stability, and unique electronic effects.

Язык: Английский