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oai:riubu.ubu.es:10259/43602022-04-29T12:02:45Zcom_10259_4354com_10259_5086com_10259_2604com_10259_4363col_10259_4355col_10259_4364

2017-03-14T10:43:21Z urn:hdl:10259/4360 Synthesis of Pyrrolidine-Fused 1,3-Dithiolane Oligomers by the Cycloaddition of Polycyclic Dithiolethiones to Maleimides and Evaluation as Mercury(II) Indicators Fuertes Lázaro, Pedro García Valverde, María Cuevas Vicario, José Vicente Díaz de Greñu Puertas, Borja Rodríguez Rodríguez, Mª Teresa Rojo Cámara, Mª Josefa Torroba Pérez, Tomás The scandium triflate-catalyzed cycloaddition reaction of polycyclic 1,2-dithiolethiones to maleimides is described. The reaction constitutes an easy approach to linear as well as branched oligomeric cis-fused dihydro[1,3]dithiolo[4,5-c]pyrrole-4,6-dione rings interconnected by 3,5-diylidenethiomorpholine-2,6-dithione or ylidene-6-thioxo[1,2]dithiolo[3,4-b][1,4]thiazin-3-one groups. The presence of highly colored, highly polarized push−pull α,β- unsaturated thione groups in their structures make these compounds sensitive to the presence of mercury(II) cation in organic or mixed organic/aqueous solvents. 2017-03-14T10:43:21Z 2017-03-14T10:43:21Z 2014-03 info:eu-repo/semantics/article http://hdl.handle.net/10259/4360 eng Journal of Organic Chemistry (JOC). 2014, V. 79, n. 5, p. 2213–2225 http://dx.doi.org/10.1021/jo500076c info:eu-repo/grantAgreement/EC/FP7/312411 info:eu-repo/semantics/openAccess American Chemical Society