《Stacking MFI zeolite structures for improved Sonogashira coupling reactions》 was written by Jia, Xicheng; Jiang, Dahong; Tsang, Daniel C. W.; Choi, Jungkyu; Yip, Alex C. K.. HPLC of Formula: 2042-37-7This research focused onZSM5 stacking support palladium catalyst preparation crystallinity; phenylacetylene bromobenzene palladium catalyst Sonogashira coupling; diphenylacetylene preparation. The article conveys some information:
A zeolite with stacking structure was designed by using hydraulic pressing and programmed temperature calcination synthesis procedures. ZSM-5 type zeolites with particle sizes of approx. 100 nm, 1 μm and 2 μm were used to synthesize stacking ZSM-5 with a size ranging from 45 to 63 μm. The prepared ZSM-5 zeolite stacking structure was used as a support to deposit palladium. The performance of the palladium/stacking ZSM-5 was investigated on Sonogashira coupling reactions. Stacking samples with micro-sized units (1 μm and 2 μm) showed a 200-300% higher turnover number (TON) than their unit counterparts. However, stacking samples with nano-sized units (100 nm) showed decreased TON conversion compared with that of their unit counterparts, probably due to partial destruction of the nano-sized ZSM-5 structure during the stacking synthesis process at high temperature The palladium/stacking ZSM-5 (micro-sized units) also showed better conversion on different bromides and alkynes than that of traditional homogenous catalysts. Moreover, the stacking composites showed good durability by recycling 4 runs without losing significant catalytic activity. The design of the stacking MFI structure exhibited improved catalytic activity, sustainability and hierarchical-resemblance properties. In the part of experimental materials, we found many familiar compounds, such as 2-Bromobenzonitrile(cas: 2042-37-7HPLC of Formula: 2042-37-7)
2-Bromobenzonitrile(cas: 2042-37-7) belongs to a group of ortho-substituted bromobenzenes that have varying hepatotoxicity effects in the presence of rat liver microsomes in vitro. 2-Bromobenzonitrile is also used as a starting material to synthesize novel benzothiophene derivatives that were found to exhibit antibacterial and antifungal activity.HPLC of Formula: 2042-37-7
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts