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Browsing Artículos by Author "Abad, J. A."

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    Non-arylic DiorganothalIium Derivatives obtained by Metallation. Synthesis and Isolation of the First DiketonyIthalIium (III) Complexes
    (2019-11-25) Vicente, J.; Abad, J. A.; Cara, G.; Gutierrez-Jugo, J. F.; Química Inorgánica
    Addition of trifluoroacetic or trifluoromethanesulfonic acid to solutions of thaIlium(l1l) trifluoroacetate in acetone results in formation of the compounds [TI{CH,C(O)Me},X] (X = CF,CO, l a or CF,SO, 1 b. Compound 1 b reacts in a 1 : 1 ratio with LiCl or KBr giving the halogeno derivatives [TI{CH,C(O)Me},Y] (Y = CI 2a or Br 2b). Compound 2a reacts with [N(PPh,),]CI yielding the anionic complex “(PPh,),] [TI{CH,C(O)Me},CI,] 3. The reaction of 1 b with 2,2‘-bipyridine (bipy) gives [{TI[CH,- C(O)Me],(p-CF,SO,) (bipy)},] 4 in which each thallium atom has a distorted six-co-ordination with the acetonyl ligands in trans positions and two cis positions occupied by two bridging triflate anions.
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    Palladium-assisted formation of carbon-carbon bonds Part 2.” Stoichiometric synthesis of spirocyclic compounds. X-ray structure of a wallylic palladium intermediate
    (2019-11-26) Vicente, J.; Abad, J. A.; Gil-Rubio, J.; Jones, P. G.; Química Inorgánica
    Stoichiometric reactions of arylpalladium compounds with alkynes give spirocyclic organic and organometallic compounds. The compound bis{r?-C-O-(2,3,4-trimethoxy-6-acetylphenyl)} di(p-chloro)dipalladium(II) reacts with diphenylacetylene or ethyl 3-phenylpropiolate giving 6-ace@-1,2,3,4- tetraphenyl-9,10-dimethoxy-spiro[4.5]1,3,6,9-decatetraen-8- one and 6-acetyl-1,3-dicarboxyethyl-2,4-diphenyl-9,lO-dimethoxy- spiro[4,5]1,3,6,9-decatetraen-8-one, respectively. A rrallylpalladium complex, 7~~-{6-acetyl-1,2,3,4_tetraphenyl- 8,9,lO-trimetho~-spiro[4,5]1,3,9-decatrien-6-enyl}(2,2’-bipyridine) palladium(II) trifluoromethylsulfonate solvated, with one molecule of 1,2-dichloroethane, has also been isolated and its structure determined by X-ray diffraction studies.