One mole of catechol displaced two moles of phenol from pentaphenoxyphosphorane (δ31P = + 85·6 ppm vs H3PO4) in CH2Cl2 and gave catecholtriphenoxyphosphorane (δ31 P = +60·8 ppm). Two moles of catechol displaced four moles of phenol from pentaphenoxyphosphorane and gave spirodicatecholphenoxyphosphorane (δ31P = +29·8 ppm). The 5-membered cyclic pentaoxyphosphoranes are more stable than the acyclic analogues
儿茶酚的一摩尔
酚移位两摩尔从pentaphenoxyphosphorane(δ 31 P = + 85·6 pPM的VS ħ 3 PO 4)在CH 2
氯2,并给catecholtriphenoxyphosphorane(δ 31 P = + 60·8 pPM)表示。
儿茶酚的两个摩尔移位从pentaphenoxyphosphorane
苯酚的四摩尔又给spirodicatecholphenoxyphosphorane(δ 31P = + 29·8pPM)。5元环戊氧基膦比无环类似物更稳定,因为当
磷上的基团保持在一个环中时,五价
磷的三角双锥体结构中存在的分子内拥挤被最小化。使用多种摩尔比的反应物,在多种温度下于多种溶剂中研究了
邻苯二酚与PCl 5的反应。先前建议的结构trichlorocatecholphosphorane(δ 31 P = + 26·5 PPM)和用于chlorospirodi