The parent compound of azuleno[1,2-a]acenaphthylene (8) was synthesized, and its 1H NMR spectrum suggests no bond alternation in the azulene moiety. The cycloaddition of 8 with dimethyl acetylenedicarboxylate gave an acenaphthyleno[1,2-d]heptalene derivative.
                                    我们合成了偶氮烯并[1,2-a]
苊烯的母体化合物(8),其 1H NMR 光谱表明偶氮烯分子中没有键的交替。8 与
乙炔二
甲酸二甲酯进行环加成反应,得到了
苊烯并[1,2-d]庚烯衍
生物。