16893-32-6Relevant academic research and scientific papers
Platinum(IV)-assisted [2 + 3] cycloaddition of nitrones to coordinated organonitriles. Synthesis of Δ4-1,2,4-oxadiazolines
Wagner, Gabriele,Pombeiro, Armando J. L.,Kukushkin, Vadim Yu.
, p. 3106 - 3111 (2007/10/03)
[2 + 3] cycloaddition between acetonitrile ligands in the platinum(IV) complex [PtCl4(MeCN)2] and the nitrones -O+N(R3) = C(R1)(R2) [R1 = H, R2 = Ph, o-C6H4OH, p-C6H4Me, p-C6H4OMe, p-C6H4NO2, p-C6H4NMe2, p-C6H4NMe2·HCl, R3 = Me; R1 = H, R2 = Ph, Bu, R3 = CH2Ph] proceeds smoothly under mild conditions and gives the first examples of Δ4-1,2,4- oxadiazoline complexes, [PtCl4{N = C(Me)O-N(R3)-C(R1)(R2)}2], as a 1:1 mixture of two diastereoisomers, in 70-90% yields. The heterocyclic ligands were liberated almost quantitatively by reaction at room temperature of the complexes with a slight excess of pyridine in chloroform giving free N = C(Me)O-N(R3)-C(R1)(R2) and trans-[PtCl4(pyridine)2]; subsequent workup allowed the isolation of the novel Δ4-1,2,4-oxadiazolines. All prepared compounds were characterized by elemental analyses, FAB or EI mass spectrometry, and IR and 1H, 13C{1H}, and 195Pt (metal complexes) NMR spectroscopies; X-ray structure determination was performed for the (R,S) diastereoisomer of trans-[PtCl4{N=C(Me)ON(Me)-CH(p-C6H4OMe)}2].
Reaction of cis-[Pt(C5H5N)2(SnCl3)2] with Oxidizing Agents
Vorob'ev-Desyatovskii, N. V.,Kukushkin, Yu. N.,Batorova, G. N.,Teterin, Yu. A.,Ivanov, K. A.
, p. 1124 - 1126 (2008/10/08)
The reactions of cis-[Pt(C5H5N)2(SnCl3)2] with Ce(SO4)2 and Cl2 in aqueous solution and also with Cl2 in the CCl4 medium were studied. It was established that the compounds of the cis-[Pt(C5H5N)2Cl4] type are formed in the reaction, i.e., oxidation of the coordinated SnCl3(-) anion is not accompanied by migration of pyridine molecules out of the complex internal sphere. This is attributable to the fact that the action of an oxidizing agent on the complex results in oxidation first of the coordinatedSnCl3(-) anion and thereafter - of the central Pt(II) atom.
