63173-83-1Relevant academic research and scientific papers
Oxidative Additionen an 2-Amino-4,4,5,5-tetrakis(trifluormethyl)-1,3,2-dioxaphospholan
Storzer, Werner,Roeschenthaler, Gerd-Volker,Schmutzler, Reinhard,Sheldrick, William S.
, p. 3609 - 3624 (2007/10/02)
Oxidative addition of HF, Cl2, and (CF3)2CO to the title compound 6 furnishes the phosphoranes 2, 9, and 3, respectively.In the case of NH4 (4) the hydrospirophosphorane 1 is obtained via a substitution reaction followed by an oxidative addition.Compound 9 is a precursor for the aminotetraalkoxyphosphoranes 5, 8, and the very stable phosphazene 10 which is formed by loss of HCl by thermolysis.Due to a slow ligand exchange the 19F NMR spectrum of phosphorane 3 exhibits eight magnetically non equivalent CF3 groups.By means of 19F homodecoupling experiments extensive through space coupling is found in the molecule.The x-ray structure analysis of 3 shows a slight distortion from the trigonal bipyramidal geometry at phosphorus.For comparison, F2PNH2 and tBu2PNH2 react with (CF3)2CO to form (CF3)2C=NH, the aminofluorophosphorane 11, F2P(=O)OCH(CF3)2 (13), tBu2P(=O)H (12) and tBu2P(=O)OCH(CF3)2 (14), respectively.
