Efficient Suzuki-Miyaura cross-coupling reaction by loading trace Pd nanoparticles onto copper-complex-derived Cu/C-700 solid support

New conjugated carbazole derivatives: synthesis and photophysical properties catalysed by Pd–Cu@rGO

“…The above results confirm that the mixture of Pd–Cu on rGO gives better results than other rGO-supported catalysts. 27…”

Catalytic filtration: efficient C-C cross-coupling using Pd(II)-salen complex-embedded cellulose filter paper as a portable catalyst

“…These results were a strong evidence for the oxidative-addition and reductive-elimination steps. 18,47,52–54…”

“…Aer diffusion, the aryl halide (here iodobenzene) is attached to Pd via an oxidative-addition reaction (step I), that was in agreement with the previous reported mechanisms for the Pd-salen catalyzed coupling reactions. [52][53][54] Phenylacetylene is coordinated to the Pd sites via a p bond, and by removing the proton by the hydroxyl group (counter ion of the imidazolium moiety), it binds to Pd and takes the substituent of iodide (step II). Iodide ion also acts as a counter ion of imidazolium moiety, which are then converted to HI and OH by water, and the catalyst returns to its original state.…”

“…In the third step, by reductive-elimination, [52][53][54] the coupling product passes through the lter paper due to its solubility in ethanol (Step III). On the other hand, due to the higher efficiency of aryl halides bearing electron withdrawing group compared to the halides with electron donating substituent (Tables 2-4), it was suggested that the reaction proceed from the path including oxidative-addition and reductive-elimination steps in agreement with the literature.…”

“…These results were a strong evidence for the oxidative-addition and reductive-elimination steps. 18,47,[52][53][54] Recyclability and stability of the lter paper A signicant advantage of the modied lter paper bearing Pd IIsalen complex was its stability and reusability in the C-C coupling reactions. The catalytic activity of FP@Si-Pd II -Salen-[IM]OH in different cycles in the models coupling reactions of (1) coupling of iodobenzene with phenylacetylene, (2) coupling of iodobenzene with phenylboronic acid, and (3) coupling of iodobenzene with styrene, was studied.…”