5-dienoates, susceptible to isomerization by acids and bases, are suitable for the [4+2] anionic annulation to give 3-(2-alkenyl)naphthoates in regiospecific manner. When combined with intramolecular carbonyl-ene reaction (ICE), the accessibility of the naphthoates culminates in a new synthesis of anthraquinones and diastereoselective synthesis of tetrahydroanthraquinones. This strategy has also resulted in a
易被酸和碱异构化的2,5-二烯六价酸酯适合[4 + 2]阴离子环化反应,以区域特异性方式生成3-(2-烯基)
萘甲酸酯。当与分子内羰基-烯反应(ICE)结合使用时,
萘甲酸的可及性最终达到新的
蒽醌合成和非对映选择性的四氢
蒽醌合成。该策略还导致了从3-甲基烯丙基
萘甲酸酯的三步合成脱氢herbarin。