Pd immobilized on EDTA-modified cellulose: synthesis, characterization, and catalytic application in inter- and intramolecular Heck reactions and Larock reactions was written by Xu, Zhian;Xu, Jinxi;Zhou, Yuping;Huang, Yuling;Li, Yiqun. And the article was included in Research on Chemical Intermediates in 2022.Quality Control of Sodium tetrachloropalladate(II) The following contents are mentioned in the article:
Pd immobilized on EDTA-modified cellulose (Pd@Cell-EDTA) was successfully prepared through sequential procedure of esterification of cellulose with EDTA (EDTA) dianhydride and metathesis with PdCl2. The as-synthesized Pd@Cell-EDTA was well characterized by ICP-AES, FTIR, SEM, EDX, elemental mapping, TEM, and XPS tools. TEM revealed that spherical Pd nanoparticles were homogeneously dispersed on the surface of Cell-EDTA with a narrow size of about 5 nm and the Pd content in fresh Pd@Cell-EDTA catalyst was determined to be 0.10 mmol/g by ICP-AES. Due to the regulation of multidentate sites of EDTA, the immobilized Pd exhibited high catalytic activity in the inter- and intramol. Heck reactions and heteroannulation Larock reactions to afford the desired products in excellent yields (66-97%). The catalyst recycling experiments for the model Heck reaction showed that the catalyst can be reused at least four consecutive runs with a slight drop in its catalytic activity. This catalyst proved its practical applications in the form of carbon-carbon and carbon-heteroatom bond for synthesis of diverse arylated alkenes and indoles. This study involved multiple reactions and reactants, such as Sodium tetrachloropalladate(II) (cas: 13820-53-6Quality Control of Sodium tetrachloropalladate(II)).
Sodium tetrachloropalladate(II) (cas: 13820-53-6) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Quality Control of Sodium tetrachloropalladate(II)
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics