51685-31-5Relevant academic research and scientific papers
BRIDGED HETEROCYCLES: The Reaction of Seven- and Eight- Membered Cyclic Phosphorochloridites with Polyols
Odorisio, Paul A.,Pastor, Stephen D.,Spivack, J. D.,Bini, Dario,Rodebaugh, R. K.
, p. 285 - 294 (2007/10/02)
The syntheses of novel bridged dibenzodioxaphosphepin and dibenzodioxaphosphocin ring systems are described.The 1H NMR spectral data of the eight-membered bridged dioxaphosphocins suggest the observation of a single conformational isomer.The 1H NMR spectrum of the didenzodioxaborocin 5 requires that either a single nonplanar conformation is being observed or that ring inversion is slow on the NMR time scale.A lower limit of for ring inversion of 5 has been calculated to be 14.4 Kcal/mole.The 1H NMR of the C-12 methyl substituted dioxaphosphocins 4h-i showed the presence of cis-trans isomer mixture.
