The primary phosphine 3,5-di-tert-butyl-2-phosphinophenol has been prepared and characterized. Oddly, the presence of a sterically demanding tert-butyl group adjacent to the PH2 centre renders the molecule very sensitive to loss of PH3 and formation of 3,5-di-tert-butyl-phenol in chloroform solutions in the presence of air. The process was catalyzed by HCl and dependent on the purity of CDCl3. Despite the instability of 3,5-di-tert-butyl-2-phosphinophenol, this material could be employed to produce a series of luminescent 2-R-4,6-di-tert-butyl-1,3-benzoxaphospholes having greater air stability than corresponding less bulky 2-R-1,3-benzoxaphospholes.
                                    我们制备了 3,5-二叔丁基-2-膦
苯酚初级膦,并对其进行了表征。奇怪的是,由于 PH2 中心附近存在一个立体要求较高的叔丁基,因此该分子对 PH3 的损失非常敏感,并在
氯仿溶液中在空气存在的情况下形成 
3,5-二叔丁基苯酚。这一过程由 HCl 催化,并取决于 CDCl3 的纯度。尽管 3,5-二叔丁基-2-膦
苯酚不稳定,但这种材料可用于生产一系列发光的 2-R-4,6-二叔丁基-1,3-苯并氧
磷酸盐,与相应的体积较小的 2-R-1,3-苯并氧
磷酸盐相比,其空气稳定性更高。