Category: ethers-buliding-blocksIn 2022 ,《Greener synthesis of pyranopyrazole derivatives catalyzed by CaO nanoparticles》 appeared in Rasayan Journal of Chemistry. The author of the article were Sangeeta; Singh, Har Lal; Chahar, Mamta; Sahal, Saloni; Khaturia, Sarita. The article conveys some information:
The development of a novel green synthetic protocol for the series of pyrano-pyrazole derivatives I (R = CN, COOEt; X = H, 4-Cl, 2-OH-4-OMe, 4-NO2, etc.) in a one-pot multi-component method using CaO nanoparticles as the heterogeneous catalyst was reported. The CaO nanoparticles were synthesized by a greener route using an economic and efficient alternative i.e. papaya leaf extract and exhibited excellent catalytic activity, and this plant-mediated synthesis of CaO nanoparticles is a very promising area of research. CaO nanoparticles can be efficiently used in the synthesis of pyrano-pyrazoles I and this catalytic approach can deliver the appropriate products in a rapid reaction time with a high yield (85-91%). The current protocol has various advantages, including a short reaction time, a high percent yield, a clean reaction, a simple separation technique, and a recoverable catalyst that retains its catalytic activity when utilized in subsequent reactions. Characterization of synthesized pyrano-pyrazole derivatives I were wdone by IR, 1H and 13C NMR spectral data as well as HOMO-LUMO calculations In the part of experimental materials, we found many familiar compounds, such as 2-Hydroxy-4-methoxybenzaldehyde(cas: 673-22-3Category: ethers-buliding-blocks)
2-Hydroxy-4-methoxybenzaldehyde(cas: 673-22-3) is the main component of root bark essential oil of Periploca sepium Bunge. It is a potential tyrosinase inhibitor present in African medicinal plants. 2-Hydroxy-4-methoxybenzaldehyde was used in the synthesis of Schiff base ligand.Category: ethers-buliding-blocks
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem