Electric Literature of C15H16O2In 2011, Sinhamahapatra, Apurba;Sutradhar, Narottom;Ghosh, Malay;Bajaj, Hari C.;Panda, Asit B. published 《Mesoporous sulfated zirconia mediated acetalization reactions》. 《Applied Catalysis, A: General》published the findings. The article contains the following contents:
A novel, convenient, one step synthetic procedure for the synthesis of mesoporous sulfated zirconia (m-SZ) using zirconium carbonate complex and its use as solid acid catalyst for the acetalization of different carbonyl compound is reported. The high specific BET surface area (234 m2 g-1) of m-SZ is achieved after the removal of the surfactant (cetyltrymethylammonium bromide, CTAB) through calcination at 550 °C for 6 h. Microscopic anal. indicated the presence of spherical particles with worm like pores. DRIFT (diffuse reflectance FTIR) of pyridine adsorbed m-SZ and NH3-TPD (temperature programmed desorption) anal. suggested the presence of appreciable amount of Broensted acid sites. The synthesized m-SZ showed high catalytic activity towards protection of carbonyl compounds through acetal/ketal formation. For the open ketal (from cyclohexanone and methanol) 97% conversion with 100% selectivity was obtained in 1 h at room temperature under solvent free condition. The catalyst can be easily recycled after separation from the reaction system without considerable loss in catalytic activity. To complete the study, the researchers used Dimethoxydiphenylmethane (cas: 2235-01-0) .
The unique properties of ethers (i.e., that they are strongly polar, with nonbonding electron pairs but no hydroxyl group) enhance the formation and use of many reagents. For example, Grignard reagents cannot form unless an ether is present to share its lone pair of electrons with the magnesium atom.Electric Literature of C15H16O2
Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem