Regioselective Synthesis of Alkylarenes by Two-Step<i>ipso</i>-Substitution of Aromatic Dicarboxylic Acids
作者:Andrea Bramborg、Torsten Linker
DOI:10.1002/ejoc.201200823
日期:2012.10
A strategy for the regioselective alkylation of arenes was developed, starting from commercially available and inexpensive terephthalic acid or naphthalene-1,4-dicarboxylic acid. The method entails a formal ipso-substitution of the carboxylate groups by a sequence of reductive alkylation under Birch conditions and subsequent acid-mediated rearomatization with loss of carbon monoxide and carbon dioxide
Regioselective Arene Functionalization: Simple Substitution of Carboxylate by Alkyl Groups
作者:Tobias Krüger、Katja Vorndran、Torsten Linker
DOI:10.1002/chem.200901774
日期:2009.11.9
from toluic and naphthoic acids, the carboxylate group was conveniently substituted by alkyl halides by Birch reduction and subsequent decarbonylation. The method is characterized by inexpensive starting materials and reagents, and methylation of arenes was realized. Besides simple alkyl substituents, the scope of arene functionalization was extended by benzyl, fluoro, amino, and ester groups. We were