nyl]ethylene were efficiently promoted by nickel(II) ions to give 4-aminated, 4-arylated, and 4-vinylated 1,2-naphthoquinones with absorption bands at larger wavelengths and with increased intensities on metal complex formation, with absorption maxima in the near i.r. region.
镍(II)离子可有效促进
1,2-萘醌-4-磺酸钠与各种芳基胺和1,1-双[对-(二甲基
氨基)苯基]
乙烯的反应,得到4-胺基,4-芳基化,和4-
乙烯基化的
1,2-萘醌,在较大的波长处具有吸收带,并且在
金属络合物形成时具有增加的强度,并且在ir区域附近具有最大吸收。