Repozytorium
Wyszukaj
Kolekcje
Inne
Transformation of 2-(trifluoromethyl)aniline over ion-exchanged montmorillonites: formation of a dimer and cyclic trimer.
Autorzy
Rok wydania
2001
Czasopismo
Numer woluminu
18
Strony
233-243
DOI
10.1016/S0169-1317(01)00036-9
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The adsorption of 2-(trifluoromethyl)aniline (2TFMA) on the interlamellar surfaces of KSF, K-10, Cu2+-, Ni2+-, Fe3+- and Al3+-montmorillonites has been investigated. Structures of the dimer and cyclic trimer species, formed via condensation reactions, were determined using NMR and mass spectral data. The catalytic activity of montmorillonite was influenced by the specific cation present with the Ni2+-montmorillonite producing the largest number of transformation products. The highest yield of 2-{difluoro-[2′-(trifluoromethyl)anilino]methyl}aniline (dimer) was obtained for Al3+-montmorillonite. The Cu2+-montmorillonite demonstrated the greatest activity in producing a 12-membered ring compound, (2-CF2C6H4NH)3, and gave the highest ratio of trimer to dimer yields. The presence of residual water in the Al3+-montmorillonite allows conversion of some 2TFMA to a carboxylic acid.
Słowa kluczowe
Catalysis, Montmorillonite, Polycondensation, NMR-spectra
Adres publiczny
https://doi.org/10.1016/S0169-1317(01)00036-9
Strona internetowa wydawcy
Podobne publikacje
H/D isotope effects in hydrogen bonded systems.
Sobczyk Lucjan, Obrzud Monika H., Filarowski Aleksander
Electrophilicity scale of activated amides: 17O NMR and 15N NMR chemical shifts of acyclic twisted amides in N−C(O) cross‐coupling.
Ielo Laura, Pace Vittorio, Holzer Wolfgang, Rahman Md. Mahbubur, Meng Guangrong, Szostak Roman, Szostak Michal
New water-soluble palladium(II) iodide complexes derived from N-protonated or N-alkyl-1,3,5-triaza-7-phosphaadamantanes: synthesis, crystal structure and catalytic properties in aqua media.
Zatajska Aleksandra, Siczek Miłosz, Skarżyńska Anna, Smoleński Piotr