EXCHANGE OF HALOGENS BETWEEN AROMATIC-COMPOUNDS IN THE PRESENCE OF CU-HZSM-5 ZEOLITE

Authors
IMHAOULENE S VIVIER L GUISNET M PEROT G GUBELMANN M
Citation
S. Imhaoulene et al., EXCHANGE OF HALOGENS BETWEEN AROMATIC-COMPOUNDS IN THE PRESENCE OF CU-HZSM-5 ZEOLITE, Tetrahedron, 50(45), 1994, pp. 12913-12922
Citations number
27
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron → ACNP
ISSN journal
00404020
Volume
50
Issue
45
Year of publication
1994
Pages
12913 - 12922
Database
ISI
SICI code
0040-4020(1994)50:45<12913:EOHBAI>2.0.ZU;2-J
Abstract
The reactions between various haloaromatics in binary mixtures which w ere approximately equimolar, were studied in gas-phase (673 K, atmosph eric pressure) in the presence of a 2 wt % Cu-HZSM-5 zeolite. The exch ange of halogens (ipso substitution) between the two compounds was ass umed to occur either through a radical mechanism involving an electron transfer between an atom of copper (I) and one aromatic molecule or t hrough a nucleophilic substitution involving arylcopper complexes as i ntermediates.