Urbano Baena, JuanKorthals, BrigitteDíaz Requejo, María MarPérez Romero, Pedro JoséMecking, Stefan2015-07-162015-07-162010Urbano, J., Korthals, B., Díaz Requejo, M.M., Pérez Romero, P.J.: "Catalytic cyclopropanation of polybutadienes". Journal of Polymer Science Part A: Polymer Chemistry. Vol. 48, n. 20, págs. 4439–4444, (2010). DOI: 10.1002/pola.242310887-624X1099-0518 (electrónico)http://hdl.handle.net/10272/10964Catalytic cyclopropanation of commercial 1,2- or 1,4- cis -polybutadiene, respectively, with ethyl diazoacetate catalyzed by [Tp Br3 Cu(NCMe)] (Tp Br3 ¼ hydrotris(3,4,5-tribromo-1-pyrazo- lyl)borate) at room temperature afforded high molecular weight ( M n > 10 5 mol 1 ) side-chain or main-chain, respectively, carbox- yethyl cyclopropyl-substituted polymers with variable and con- trolled degrees of functionalization. Complete functionalization of 1,4- cis -polybutadiene afforded poly[ethylene-alt-(3-ethoxycar- bonyl-cyclopropene)]. Catalytic hydrogenation of residual dou- ble bonds of partially cyclopropanated polybutadienes provided access to the corresponding saturated polyolefins. Thermal properties are reported.engAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/Carbene additionCatalysisFunctionalization of polymersOrganometallic catalysisPolar groupsPolybutadienesjournal article10.1002/pola.24231open access