437606-72-9Relevant articles and documents
Novel reactivity mode of hydroxamic acids: A metalla-pinner reaction
Luzyanin, Konstantin V.,Kukushkin, Vadim Yu.,Kuznetsov, Maxim L.,Garnovskii, Dmitrii A.,Haukka, Matti,Pombeiro, Armando J. L.
, p. 2981 - 2986 (2002)
The reaction between the nitrile complex trans-[PtCl4(EtCN)2] and benzohydroxamic acids RC6H4C(=O)NHOH (R = p-MeO, p-Me, H, p-Cl, o-HO) proceeds smoothly in CH2Cl2 at ~45°C for 2-3 h (sealed tube) or under focused 300 W microwave irradiation for ~15 min at 50°C giving, after workup, good yields of the imino complexes [PtCl4{NH=C(Et)ON=C(OH)(C6H4R)}2] which derived from a novel metalla-Pinner reaction. The complexes [PtCl4- {NH=C(Et)ON=C(OH)(C6H4R)}2] were characterized by elemental analyses (C, H, N), FAB mass spectrometry, and IR and 1H and 13C{1H} spectroscopies, and [PtCl4{NH=C(Et)ON=C(OH)(Ph)}2] (as the bis-dimethyl sulfoxide solvate), by X-ray single-crystal diffraction. The latter disclosed its overall trans-configuration with the iminoacyl species in the hydroximic tautomeric form in E-configuration which is held by N-H···N hydrogen bond between the imine =NH atom and the hydroximic N atom.