Synthesis of C3-symmetric nano-sized Polyaromatic compounds by trimerization and Suzuki-Miyaura cross-coupling reactions

Various C-3-symmetric molecules were prepared by trimerization of acetyl aromatic compounds and subsequently coupled with various boronic acids under Pd-0 catalysis conditions to generate oligoaryl/-heteroaryl C-3-symmetric molecules. Several furan- and thiophene-containing star-shaped molecules were prepared by the use of Suzuki-Miyaura cross-coupling as a key step. Structural and conformational details were explored by semi-empirical molecular orbital theory using the AM1 method.