Two new enantiomerically pure ferrocenylphenol-thiophosphine compounds have been efficiently synthesized by a one pot procedure from enantiomerically pure alcohol (R)-(diphenylthiophosphinoferrocenyl)methanol 1 by a fully regioselectiveFriedel-Crafts reaction on phenols after strong acid activation. A mechanistic proposal through O-alkylation followed by rearrangement of the formed oxonium is proposed. All compounds have been and fully characterized by NMR( 1 H, 31 P and 13 C) and High

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... n Mass Spectroscopy. The molecular structure of one of these ferrocene derivatives has been determined by X ray diffraction analysis on monocrystal. ________________________________________________________________________________ Fe PPh 2 OH S