chair conformation with the lone pair or the phosphoryl oxygen in the equatorial position. The alkylphenoxy groups are in a cis position with respect to the lone pair or the phosphoryl oxygen. Conformational changes about the arylO bond can be monitored via 31POC13C couplings and their angular dependence was found to be non‐symmetric.
3,9-二(烷基苯氧基)-2,4,8,10-四氧杂-3,9-二
磷螺[5.5]
十一烷的14种衍
生物和3种衍
生物的13C NMR
化学位移和13C-31P偶联常数, 9-dioxo 型被报道。所有研究的化合物都具有椅子构象,在赤道位置具有孤对或
磷酰氧。烷基苯氧基相对于孤对或
磷酰氧处于顺式位置。芳基O键的构象变化可以通过31POC13C偶联进行监测,并且发现它们的角度依赖性是非对称的。