2697-37-2Relevant articles and documents
PERFLUORINATED RESINSULFONIC ACID - A CATALYST FOR CERTAIN ORGANIC REACTIONS.
Etlis,Beshenova,Semenova,Shomina,Dreiman,Balaev
, p. 551 - 555 (2007/10/02)
The purpose of this work was to examine the possibility of using, as a catalyst in certain organic reactions, the perfluorinated resinsulfonic acid F-4SK in the H form, which is an analog of the perfluorinated resinsulfonic acid Nafion-H. To compare catalyst activity of the perfluorinated resinsulfonic acid in decomposition of cumene hydroperoxide, CHP was also decomposed in presence of KU-2 resin. It was found that during repeated use over a period of 150 h the activity of KU-2 catalyst under analogous conditions fell by 4-6%. During the same time the activity of the perfluorinated resinsulfonic acid remained unchanged. It is also known that the presence of a strong acid in the reaction mixture causes formation of by-products, namely the products of condensation of phenol with acetone and dimethylphenylcarbinol, and of dehydration of dimethylphenylcarbinol, with formation of alpha -methylstyrene and products of greater complexity.
FORMATION DE DIOXOLANNES A PARTIR DE L'EPICHLORHYDRINE DU GLYCEROL. HYDROLYSE AISEE DE DIOXOLANNES PAR LE TOSYLATE DE PYRIDINIUM
Thuy, Vu Moc,Petit, Huguette,Maitte, Pierre
, p. 759 - 762 (2007/10/02)
We described a versatile synthesis of dioxolanne from 1-chlor 2,3-epoxypropane epichlorhydrine and different carbonyl compounds in presence of activated montmorillonite which is easily eliminated after the reaction.The hydrolysis was performed in mild conditions with pyridinium p-toluene sulfonate.