76074-20-9Relevant academic research and scientific papers
Organozinnverbindungen XXXIII. Die erste Komplexbildung zwischen Organozinn- und Nitroderivaten: Reactionen der Zinn-Alkyl-Bindung
Al-Allaf, Talal A. K.,Kobs, U.,Neumann, W. P.
, p. 29 - 36 (2007/10/02)
Although trimethylstannylbenzene in presence of MeCOCl*AlCl3 undergoes a carbodestannylation to give acetophenone, its 2-NO2, 3-NO2, 4-NO2, and 2,4-(NO2)2 derivatives (1a-d) exhibit a surprising, high activation of the aliphatic C-Sn bond (Me-Sn) which allows a single cleavage to give the corresponding dimethylchlorostannyl nitrobenzenes (2a-d) quantitatively without any aryl-Sn bond cleavage.A strong, hitherto unknown, intramolecular pentacoordination at the tin in 2a and 2d via complexation by the ortho nitro groups, is indicated by the IR, 1H, 13C, and 119Sn NMR spectral data.In contrast, reaction of iodine with 1a-d, or with 2a-d results in exclusive SEar ipso substitution of all stannyl groups.The mechanisms are discussed, preparative procedures and spectroscopic details are described.
Syntheses of 2,4-Dinitro-substituted Bis(phenyl)platinum(II) Compounds
Brune, Hans Albert,Stapp, Bernhard,Schmidtberg, Guenther
, p. 1845 - 1856 (2007/10/02)
Syntheses of the compounds 4-COD)(aryl)> (7b-e; 4) and cis2(aryl)> (cis-1d-f) are reported.Experiments to synthesize 4-COD> (7a) and cis-2(XC6H4)> (X = 4-CH3O; 4-CH3) (cis-1b, c) with one electron acceptor-substituted and one electron donor-substituted phenyl ring resulted in the spontaneous reductive elimination of the biphenyls 2,4-(O2N)2C6H3-C6H4X-(4) (8a-c).This observation supports the hypothesis of a donor acceptor interaction in the transition state of the reductive biphenyl elimination from cis-1.
