The abnormal hydrolysis of 7-phosphanorbornenium salts: a case of phosphonium-phosphenium equivalence.
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.
Chemistry Department, International Phosphorus Laboratory, Zhengzhou University, Zhengzhou 450052, PR China.
Rongqiang
R
Tian
Hui
H
Liu
Zheng
Z
Duan
François
F
Mathey