Anthranilamide-masked <i>o</i>-Iodoarylboronic Acids as Coupling Modules for Iterative Synthesis of <i>ortho</i>-Linked Oligoarenes
作者:Masashi Koyanagi、Nils Eichenauer、Hideki Ihara、Takeshi Yamamoto、Michinori Suginome
DOI:10.1246/cl.130136
日期:2013.5.5
Anthranilamide (AAM)-masked o-iodoarylboronic acids were prepared from AAM-masked arylboronic acids via Ru-catalyzed o-C–H silylation, followed by iododesilylation with ICl. The Suzuki–Miyaura coupling of AAM-masked o-haloarylboronic acids with arylboronic acids proceeded under ligand-free conditions. Oligo(o-phenylene)s and oligo(naphthalene-2,3-diyl)s were synthesized via iterative Suzuki–Miyaura coupling sequences.
采用Ru催化的o-C–H硅烷化反应,从AAM掩蔽的芳基硼酸制备了AAM掩蔽的o-碘芳基硼酸,随后通过ICl进行碘去硅化。在无配体条件下,AAM掩蔽的o-卤芳基硼酸与芳基硼酸的铃木-宫浦偶联反应得以进行。通过迭代的铃木-宫浦偶联序列合成了寡(o-苯基)和寡(萘-2,3-二基)。