The hydrolysis of a phosphanorbornenium triflate gives the expected tertiary phosphine oxide by cleavage of one P-C bond of the bridge in the presence of triethylamine but affords the secondary phosphine oxide by cleavage of the two P-C bonds of the bridge in the presence of alpha-picoline.
三氟甲磺酸酯的水解通过在三乙胺的存在下裂解桥的一个 PC 键得到预期的叔氧化膦,但在存在 α-甲基吡啶的情况下通过裂解桥的两个 PC 键得到仲氧化膦。
7-Phosphanorbornenium Borohydrides: A Powerful Route to Functional Secondary Phosphine−Borane Complexes
作者:Rongqiang Tian、François Mathey
DOI:10.1021/om100053d
日期:2010.4.26
The reaction of phosphanorbornenium triflates with sodium borohydride gives the secondary phosphine borane complexes by reductive cleavage of the two P C bonds of the bridge. This route is compatible with functionalities such as Cl, CN, CO(2)Et, and Th.