Pyridino-terminated oligo

C. Modified Route to Pyridino-Terminated Oligo(dimethylsiloxane) ... 

A modified route to prepare oligo(dimethylsiloxane)s (ODMS) with pyridino-termination 48 at one chain end was investigated by Aoyagi et al. In the first step, / -chlorometiiylphenyl (CMP)-terminated ODMS (CMP-ODMS) 47 was obtained. The chloromethyl group was easily quaternized by reaction with a pyridine derivative (Scheme 18). A CAChe representation for the pyridinio-terminated ODMS polymer is shown in Scheme 19. 

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