On the Tautomerism of Secondary Phosphane Oxides

…, A Spannenberg, W Baumann, R Franke…

Index: Christiansen, Andrea; Li, Chuanzhao; Garland, Marc; Selent, Detlef; Ludwig, Ralf; Spannenberg, Anke; Baumann, Wolfgang; Franke, Robert; Boerner, Armin European Journal of Organic Chemistry, 2010 , # 14 p. 2733 - 2741

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Citation Number: 15

Abstract

Abstract The tautomeric behaviour of five secondary phosphane oxides (SPOs) with different electronic properties has been investigated by NMR and IR spectroscopy, density functional theory calculations and X-ray structural analysis. Proof is given that only with strong electron- withdrawing groups on the phosphorus atom can the relevant trivalent phosphinous acid be observed in the equilibrium, whereas in the case of electron-rich phosphane oxides the ...