Synthesis and Reactivity of Hydrazido(2-) and Imido Derivatives of Titanium(IV) TetratolylporphyrinInorganic Chemistry
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AbstractTitanium porphyrin hydrazido complexes (TTP)TiNNR2 (TTP = meso-tetra-p-tolylporphyrinato dianion; R = Me (1), Ph (2)) were synthesized by treatment of (TTP)TiCl2with 1,1-disubstituted hydrazines H2NNR2 (R = Me, Ph) in the presence of piperidine. The nucleophilic character of the hydrazido moiety was demonstrated in the reactions of complexes 1 and 2 with p-chlorobenzaldehyde, which yielded the titanium oxo complex (TTP)TiO and the respective hydrazones. Protonation of complexes 1 and 2 with phenol or water produced the 1,1-disubstituted hydrazine along with (TTP)Ti(OPh)2 or (TTP)TiO, respectively. Similar reactivity of p-chlorobenzaldehyde and phenol with (TTP)TiNiPr, 3, was observed. The reaction of complex 3 with nitrosobenzene cleanly formed the azo compound iPrNNPh and the terminal oxo product (TTP)TiO.
Copyright OwnerAmerican Chemical Society
Citation InformationJoseph Lyndon Thorman and L. Keith Woo. "Synthesis and Reactivity of Hydrazido(2-) and Imido Derivatives of Titanium(IV) Tetratolylporphyrin" Inorganic Chemistry Vol. 39 Iss. 6 (2000) p. 1301 - 1304
Available at: http://works.bepress.com/l-woo/57/