Chemistry Letters, Vol.32, No.12, 1144-1145, 2003
A novel and convenient synthetic route to a 9-phosphatriptycene and systematic comparisons of 9-phosphatriptycene derivatives
A novel synthetic route to a 9-phosphatriptycene was developed by utilizing ortho-lithiation of a triarylphosphine oxide as a key step. Systematic comparisons of the NMR spectra of 9-phosphatriptycene derivatives indicated the large s character of the lone pair orbital or the phosphorus-chalcogen bonds of the 9-phosphatriptycene derivatives.