中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2-diazobenzoselenophen-3(2H)-one | 117582-99-7 | C8H4N2OSe | 223.093 |
3-Oxo-2,3-dihydrobenzo[b]furans, -thiophenes and -selenophenes 1a - c afforded the bromo-aldehydes 2 under Vilsmeier-Haack-Arnold conditions. Palladium-catalysed aryl-aryl coupling of 2 with o-formyl-phenylboronic acid allowed the formation of dialdehydes 3 which underwent McMurry cyclisation or pinacol condensation to yield polycyclic aromatic derivatives 4 or the dihydroxylated compounds 5