181825-83-2Relevant academic research and scientific papers
Syntheses, Structures, and Reactivity of 1-Phosphanylnaphth-2-ols
Heinicke, Joachim,Kadyrov, Renat,Kindermann, Markus K.,Kloss, Matthias,Fischer, Axel,Jones, Peter G.
, p. 1061 - 1072 (2007/10/03)
P-tertiary or amino-substituted 1-phosphanylnaphth-2-yl silyl ethers 3 are synthesized by stepwise reaction of lithium 1-lithio-2-naphtholate 1 with chlorophosphanes and ClSiMe3.The free phosphanylnaphthols 4 are prepared by alcoholysis.As established by characteristic coupling constants and X-ray structural analyses (of 3c, 4c), 3 exhibit in solution and in the solid state a cis-bisecting conformation, whereas 4 prefers the opposite trans-bisecting arrangement, allowing easy protonation and formation of chelate complexes.Substitution reactions of phosphanylnaphtholates 2 with Ph2PCl and formation of chelate complexes LNi-η5-Cp and L2Pd are described.Attempts to prepare secondary and primary phosphanylnaphthols failed because of facile cleavage of the P-C(naphthyl) bond in PH-substituted 1-phosphanyl-naphth-2-ols. - Keywords: Phosphanylnaphthol; PO ligands; Chelate complexes
