Synthesis, characterization, and catalytic properties of diphenyl- and dichlorobutyltin functionalities grafted to insoluble polystyrene beads by a -(CH2)(n)- (n=4, 6) spacer
Mercier, FAG × Biesemans, M Altmann, R Willem, R Pintelon, R Schoukens, Joannes Delmond, B Dumartin, G #
Amer chemical soc
Organometallics vol:20 issue:5 pages:958-962
Insoluble diorganotin functionalized polymers of the type (P-H)(1-t)(P-(CH2)(n)SnBuX2)(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 Sn-117 and C-13 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.