Synergistic Brønsted/Lewis acid catalyzed aromatic alkylation with unactivated tertiary alcohols or di-<i>tert</i>-butylperoxide to synthesize quaternary carbon centers
作者:Aaron Pan、Maja Chojnacka、Robert Crowley、Lucas Göttemann、Brandon E. Haines、Kevin G. M. Kou
DOI:10.1039/d1sc06422c
日期:——
Dual Brønsted/Lewis acid catalysis involving environmentally benign, readily accessible protic acid and iron promotes site-selective tert-butylation of electron-rich arenes using di-tert-butylperoxide. This transformation inspired the development of a synergistic Brønsted/Lewis acidcatalyzed aromatic alkylation that fills a gap in the Friedel–Crafts reaction literature by employing unactivated tertiary
Multiple chlorinations and arylations at the tertiary positions of adamantane are promoted by FeCl3-doped K10 montmorillonite in CCl4 or in aromatic solvents. The process, remarkably easy to implement, can be tailored to selective formation of monosubstituted 1-adamantyl derivatives or 1,3-disubstituted adamantanes. The process achieves alkylation at the meta- and para-positions of toluene leading
In this communication flow Friedel–Crafts alkylation was studied using hydroxy‐substituted sulfonic acid‐functionalized silica as a catalyst and 1‐adamantanol as a model substrate. The reaction of 1‐adamantanol (1a) with toluene (2a) proceeded well with 5 min of residence time at 120°C to give good yield of 1‐tolyladamantane (3a) as a 1:9 mixture of meta and para isomers. When the flow synthesis was
Braese, Stefan; Waegell, Bernard; Meijere, Armin de, Synthesis, 1998, # 2, p. 148 - 152
作者:Braese, Stefan、Waegell, Bernard、Meijere, Armin de
DOI:——
日期:——
Alkylation of aromatic compounds with adamantan-1-ol
作者:A. V. Stepakov、A. P. Molchanov、R. R. Kostikov
DOI:10.1134/s1070428007040082
日期:2007.4
Reactions of substituted benzenes, naphthalenes, and 2- and 3-phenyl-1-benzofurans with adamantan-1-ol in trifluoroacetic acid lead to the formation of the corresponding mono-and diadamantylsubstituted aromatic compounds.