PdCl₂Immobilized in Polyacrylamide: a Low Cost and Eco-Friendly Catalyst for Suzuki-Miyaura Reactions

Palladium nanoparticle biosynthesis via Yerba Mate (Ilex paraguariensis) extract: an efficient eco-friendly catalyst for Suzuki–Miyaura reactions

“…The other aryl chlorides tested or reacted in the order of trace (entries 9-10) or did not promote the reaction (entry 11). In this study, the TON and TOF values were calculated and proved to be superior (see entry 1) to other catalytic systems that employ similar conditions (conventional heating and the same amount of catalyst) [24][25][26].…”

“…The band observed at 2363 cm −1 indicates a possible contamination of the sample by CO 2 during the FT-IR analysis. Thus, based on the FT-IR data, it can be inferred that the phenolic hydroxyl groups present in the extract of yerba mate play an important role in the reduction of Pd(II) cations and [9,11,13,23], together with the carbonyl groups, has a possible action consortium in the stabilization of Pd NPs [24]. ICP-OES analysis was also performed on the prepared PdISM sample, and it showed that only 29% of the weight was formed by Pd.…”

“…Thus, with the actual knowledge about the composition of PdISM, the catalytic activity of the solid obtained was tested in the Suzuki-Miyaura reaction of phenylboronic acid with 4-bromotoluene (Scheme1, Table 2). The catalytic systems employed were guided by previous work of our research group and excelled by the use of the eco-friendly reagents [24][25][26].…”

“…13 C NMR (100 MHz, CDCl 3 ) δ: 147.6, 147.1, 138.8, 129.2, 128.9, 127.8, 127.4, 124.1 ppm. GC-MS (IE, 70 eV) m/z (%): 152 (100), 199 (58, M +), 169 (53), 151 (34), 141 (24), 153 (22), 115 (17), 76 (15).…”