Adducts from quinones and diazoalkanes. Part VII. The function of quinone methides in the side-chain amination of alkylquinones and in dimerisations giving ethylenediquinones
作者:F. M. Dean、L. E. Houghton、R. B. Morton
DOI:10.1039/j39680002065
日期:——
action of bases on the adduct (V), from diazomethane and 2-methyl-1,4-naphthaquinone, the 3-methyl-1,4-naphthaquinon-3-yl anion (XIV) is rapidly interconvertible with the quinone methide (VI) which adds primary or secondary, aliphatic or aromatic amines giving derivatives of 2-aminomethyl-3-methyl-1,4-naphthaquinone. Aliphatic amines are basic enough to react directly with the adduct (V), whereas aromatic
由重氮甲烷和2-甲基-1,4-萘醌在加合物(V)上的碱作用下在甲醇中形成,3-甲基-1,4-萘醌-3-基阴离子(XIV)可与甲基苯醌(VI),其添加伯或仲,脂族或芳族胺,得到2-氨基甲基-3-甲基-1,4-萘醌的衍生物。脂肪胺的碱性足以与加合物(V)直接反应,而芳香胺则需要额外的碱。由于电荷转移现象,芳基氨基甲基醌是深色的,该性质用于在添加的额外碱的量与乙二醌衍生物(XIII)和芳基氨基甲基醌的形成之间的竞争结果之间建立关系。