Fluorophosphonylated Monomers for Dental Applications
摘要:
The synthesis of acrylate derivatives bearing a difluorophosphonic acid function has been realized by ring-opening reaction of oxac-ycles and alkylation of fluorinated carbanions. Their use in self-etch adhesives is reported. The resulting adhesives based on difluorophosphonic acid monomers provide significantly higher dentin shear bond strength (SBS) than the one based on phosphonic acid, mainly due to the presence of fluorine atoms.
Ring-opening reactions of functionalized 1,2-cyclic sulfates and oxetanes with the phosphonodifluoromethyl carbanion are reported. This approach allows an easy access to fluorinated beta-hydroxyphosphonates that are building blocks in the synthesis of acyclic nucleosides. Synthesis of precursors of nucleoside phosphorylase inhibitors from these alcohols is described.
Syntheses of ω-Hydroxy-α,α-difluoromethylphosphonates by Oxacycle Ring-Opening Reactions
作者:Paul Ozouf、Grégory Binot、Jean-Claude Pommelet、Thierry P. Lequeux
DOI:10.1021/ol048549g
日期:2004.10.1
Oxacycle ring-opening reactions from a non-HCFC-based source of phosphonodifluoromethyl carbanion 1 are reported. This straightforward strategy opens access to a variety of primary and secondary omega-hydroxy-alpha,alpha-difluoromethylphosphonates via one step. The syntheses of a glycerol monophosphate analogue and precursors to nucleoside phosphorylase inhibitors are described using this method.