The conformations of substituents attached to the 1,4-dioxene1 ring of the monosubstituted phenanthrodioxene system have been established from coupling constants of the vicinal dioxene ring protons. Phenyl and naphthyl are found to be almost exclusively fixed in the equatorial position. With the substituents R = SC2H5, OC2H5 and Cl the dioxene ring exists in equilibrium between its two half chair
从邻二氧杂环质子的偶合常数已经确定了连接到单取代的
菲二氧杂
环丁烯系统的1,4-二氧杂1环上的取代基的构象。发现苯基和
萘基几乎完全固定在赤道位置。与取代基R =SC 2 ħ 5,OC 2 ħ 5和Cl的二
环氧乙烯环在其两个半椅构象之间的平衡存在,则取代基可以是该序列中日益主要的轴向定向。顺式和反式的赋值-configurations到二取代phenanthro-和从photoadditions˚F9,10-
菲醌的烯烃得到tetrachlorobenzo二恶烯衍
生物:茋,1-苯基propene-(1),β-ethxystyrene和从之间四
氯热反应Ò -苯醌和β-乙氧基
苯乙烯分别基于邻近环质子的偶联常数和
化学位移。