Cross-coupling reaction between arylboronic acids and carboranyl iodides catalyzed by graphene oxide (GO)-supported Pd(0) recyclable nanoparticles for the synthesis of carboranylaryl ketones

Abstract

Well-dispersed palladium(0) nanoparticles with small and narrow size distributions were synthesized conveniently on a graphene oxide (GO) surface. The GO-supported nano-Pd⁰ was found to be a highly efficient and recyclable catalyst for the carbonylative cross-coupling reaction between arylboronic acids and aryl and carboranyl iodides, respectively. Benzophenone and a series of carboranylaryl ketones, 1-R-2-[C(O)Ar]-1,2-C₂B₁₀H₁₀ (R = H, Me, Ph; Ar = C₆H₅, C₆H₄-4-OMe and C₆H₄-4-F), were synthesized and fully characterized. The catalyst was recyclable at least three times with sustained activity.