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Synthesis, characterization, and catalytic properties of diphenyl- and dichlorobutyltin functionalities grafted to insoluble polystyrene beads by a -(CH2)n - (n = 4, 6) spacer

par Mercier, Frédéric ;Biesemans, Monique;Altmann, Reiner;Willem, Rudolph ;Pintelon, Rik;Schoukens, Johan;Delmond, Bernard;Dumartin, Gilles
Référence Organometallics, 20, 5, page (958-962)
Publication Publié, 2001-03

Article révisé par les pairs

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Résumé :

Insoluble diorganotin functionalized polymers of the type (P-H)1-t(P-(CH2)nSnBuX2)t , with n = 4, 6, X = Ph, Cl, and t being the degree of functionalization, were synthesized from Amberlite XE-305, an insoluble polystyrene (P-H) cross-linked with divinylbenzene. The synthesis conditions used gave rise to functionalization degrees varying from 25% to 30%. The tin-functionalized polystyrenes were characterized by elemental analysis, IR, and Raman as well as solid-state 117Sn and 13C NMR spectroscopy. Methodological and chemical features related to the determination of the functionalization degree have been investigated in detail. The catalytic activity of the Amberlite-grafted tin functionalities in transesterification reactions was studied.