Photoaccelerated Suzuki-Miyaura and Sonogashira coupling reactions catalyzed by an Ir-Pd binuclear complex

Reaction of iridium complex [Ir(N,C-dFppy)(2)(L)Cl] (Ir-1) [L = 5-phenyl-2,8-di-2-pyridinyl-anthyridine] with (CH3CN)PdCl2 to yield a hetero-binuclear complex Ir-Pd via ortho-metallation. Complexes were characterized by spectroscopic and crystallographic methods. Complex Ir-Pd shows an excellent catalytic activity for both Suzuki-Miyaura and Sonogashira cross coupling reactions under blue LED irradiation at ambient temperature. This catalytic system is operated via light energy harvested by the Ir center, which is able to cooperate with Pd center for the coupling reactions to take place. Effects on these coupling reactions catalyzed by Ir-Pd under photochemical conditions were studied.

Automated summary

A hetero-binuclear complex Ir-Pd was obtained by the reaction between iridium complex and (CH3CN)PdCl2 via ortho-metallation. This complex showed excellent catalytic activity for Suzuki-Miyaura and Sonogashira cross coupling reactions under blue LED irradiation. The effects of photochemical conditions on these coupling reactions catalyzed by Ir-Pd were studied.