compounds are suggested to have a preferable contribution of the quinonoid resonance structure at the ground state, but are slightly more polar than the iso-π-electronic 5-cycloheptatrienylidene-2(5H)-thiophenone, revealing that the dithiolidene residue is more electron-donating than the cycloheptatrienylidene one.
标题化合物及其苯基衍
生物已通过我们开发的有利途径制备。这些交叉共轭化合物被认为在基态对
醌类共振结构有更好的贡献,但比等-π-电子 5-环庚三亚基-
2(5H)-噻吩酮的极性略强,表明二
硫叉基残基比环庚三亚基更能供电子。