75729-44-1Relevant academic research and scientific papers
LES PHOSPHORANES MONOCYCLIQUES A LIAISON PH DANS LES REACTIONS DE REDISTRIBUTION DE LIGANDS DES COMPOSES DU PHOSPHORE TRICOORDONNE
Tangour, B.,Malavaud, C.,Boisdon, M. T.,Barrans, J.
, p. 189 - 196 (2007/10/02)
The oxidative addition of alcohols and amines with 2-alkyl, 2-aryl, 1,3,2-dioxa, oxaza or diazaphospholanes, leads to a ring opening reaction and ligands exchange around the phosphorus atom by alcoholysis or aminolysis of P-O or P-N bonds.In nearly all cases, monocyclic phosphoranes with P-H bond have been detected in an intermediate step during the exchange of one tricoordinate form to another one.At last we have discussed the phorpholanyl ring stability. - Key words: 1,3,2-Dioxaphospholanes; 1,3,2-oxaza-phospholanes; 1,3,2-diazaphospholanes; Monocyclic phosphoranes with P-M bonds; phosphoranyl ring stability.
PHOSPHORANES MONOCYCLIQUES A LIGAND HYDROGENE I-ETUDE DE L'EQUILIBRE DE FORMATION
Boisdon, M. T.,Malavaud, C.,Tangour, B.,Barrans, J.
, p. 305 - 314 (2007/10/02)
Addition of compounds containing a mobile hydrogen (alcohols, amines ...) to derivatives of tetramethyldioxaphospholane leads to monocyclic phosphoranes including a P-H bond in equilibrium with the starting phospholane: Study of this equilibrium by 31P, 1H and 13C NMR shows a real dependence on solvent, temperature and concentrations of the reagents.Keeping in mind a BPT structure, the NMR data suggest an apical position for the H bonded to P in phosphoranes obtained by reaction with amines.
