elaboration of tetra-orthogonally-substituted aromatic scaffolds regioselective routes to orthogonally-substituted aromatic mida regioselective routes to orthogonally-substituted aromatic mida chem.:新型含有强反芳香性环丁二烯的多环共轭分子半导体 regioselective routes to orthogonally-substituted aromatic mida