131328-40-0Relevant academic research and scientific papers
O-SILYLATION OF SOME UNSATURATED CYCLIC PHOSPHINE OXIDES
Quin, Louis D.,Kisalus, John C.,Skolimowski, Janusch J.,Rao, Nandakumar S.
, p. 1 - 7 (2007/10/02)
The phosphoryl oxygen of 1,6-dihydrophosphinine oxides is silyltaed rapidly at room temperature by bis(trimethylsily)trifluoroacetamide; the product loses a ring proton to establishe the resonance stabilized λ5-phosphinine ring system.Similar events take place with a 3-keto derivative of a tetrahydrophosphinine oxide, which also undergoes silylation of the keto oxygen. 1,4-Dihydro-1,4-azaphosphinine are silylated to give 1,4-aza-λ5-phosphinine; their dibenzo derivatives (5,10-dihydrophenophosphazine oxides) require more forcing conditions (triethylsilyl bromide at 100 deg C) for phosphoryl silylation.These conditions are also effective for silylation of a 3-phospholene oxide.
