Intact Alkylation of Benzene - Some Unusual Differences in Catalyst Systems

The Alkylation of Aromatic Compounds With Olefins

“…In a thorough investigation, SANFORD et al [92] have studied the catalysts and the conditions under which no side-reactions due to depolymerization and further alkylation take place even when di-isobutene is used as the alkylation component (see p. 214, reference 152).…”

Alkylation. Unit Processes Review

“…Several catalysts were evaluated (68) for the intact alkylation of benzene and toluene with diisobutylene. Benzene alkylated with considerable more difficulty than toluene.…”

Alkylation of Benzene and Toluene

“…The intact alkylation of benzene and homologs with diisobutylene and its hydrogen chloride addition product has been reported (5). Octylation of toluene, for example, was accomplished in good yield with various acid and Friedel-Crafts catalysts, provided the proper operating conditions were chosen.…”

“…The alkylation procedures and methods of product work-up and identification were the same as previously described (5).…”

“…Because aluminum chloride-catalyzed alkylations of benzene and toluene with diisobutylene often yield considerable dodecyl and hexadecyl derivatives (5), it seemed logical to expect favorable yields of these by direct alkylation of toluene with triisobutylene and tetraisobutylene. However, only moderate amounts of intact alkylate are obtained even at low temperatures (Table II).…”