3660-10-4Relevant academic research and scientific papers
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.
SOME REACTIONS OF 2-SUBSTITUTED SPIRO ORTHO ESTERS UNDER INTERPHASE CATALYSIS CONDITIONS
Etlis, V. S.,Bulovyatova, A. B.,Shomina, F. N.,Semenova, E. A.
, p. 1602 - 1605 (2007/10/02)
The nucleophilic substitution of halogen in 2-halogeno spiro ortho esters was realized by the salts of carboxylic acids in the presence of the interphase transfer catalysts triethylbenzylammonium chloride and 18-crown-6 polyether.The 2-acetoxy spiro ortho esters are hydrolyzed to the corresponding alcohols in the presence of the same catalyst.The hydroxyl-containing spiro ortho esters are converted into normal esters by the action of acid anhydrides or chlorides.
