Dimerization of 2-hydroxyanthracene was investigated with 5 mol % of various catalysts that are efficient catalysts for the dimerization of 2-naphthol. Catalysts such as Cu(OH)Cl·TMEDA, [Mn(acac)3], and [Mn(acac)2] did not give satisfactory results. However, MnI2, which gave only trace amounts of dimerization product of 2-naphthol under the same conditions, afforded 2,2′-dihydroxy-1,1′-bianthracene in 74% yield.
对
2-羟基蒽的二聚反应进行了研究,使用了5 mol %的多种催化剂,这些催化剂被证实在2-
萘醇的二聚反应中表现良好。催化剂如Cu(OH)Cl·TME
DA、[Mn(acac)3]和[Mn(acac)2]的表现并不令人满意。然而,MnI2在相同条件下仅给出了微量的2-
萘醇二聚产物,却能在74%的产率下生成2,2′-二羟基-1,1′-双
蒽。