TRANSITION-METAL SUBSTITUTED PHOSPHANES, ARSANES AND STIBANES, LIX - AN ADDUCT OF THE ME3P-SUBSTITUTED FERRIO-DIPHENYLPHOSPHANE CP(OC)(ME3P)FE-PPH2 AND METHYLISOTHIOCYANATE - SYNTHESIS, PROTONATION, AND METHYLATION
W. Malisch et al., TRANSITION-METAL SUBSTITUTED PHOSPHANES, ARSANES AND STIBANES, LIX - AN ADDUCT OF THE ME3P-SUBSTITUTED FERRIO-DIPHENYLPHOSPHANE CP(OC)(ME3P)FE-PPH2 AND METHYLISOTHIOCYANATE - SYNTHESIS, PROTONATION, AND METHYLATION, Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 53(10), 1998, pp. 1077-1083
Treatment of the ferrio-phosphane Cp(OC)(2)Fe-PPh2 (1) with Me3P (2) y
ields Cp(OC)(Me3P)Fe-PPh2 (3) via GO-substitution. Reaction of 3 with
methylisothiocyanate (4) leads to the formation of the adduct Cp(OC)(M
e3P)Fe-PPh2-C(S)NMe (5), which is regioselectively methylated at the s
ulfur atom with MeI (6a) or MeSO3CF3 (6b), respectively, to give the c
ationic complexes [Cp(OC)(Me3P)Fe-PPh2-C(SMe)=NMe]I/CF3SO3 (7a,b). In
contrast, protonation with CF3SO3H (8) occurs at the nitrogen atom, yi
elding [Cp(OC)(Me3P)Fe-PPh2-C(S)-N(H)Me] CF3SO3 (9). The structures of
7b and 9 have been determined by X-ray diffraction analysis.