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Benzylic triflates prepared in‐situ: novel initiators for mono‐, bi‐ and trifunctional living poly(THF)s
Authors:Hideaki Oike  Yuka Yoshioka  Shinji Kobayashi  Megumi Nakashima  Yasuyuki Tezuka  Eric J. Goethals
Abstract:Mono‐, bis‐, and tris(trifluoromethanesulfonate ester)s ((triflate ester)s) were prepared by the reaction of benzyl alcohol ( 1 ), 1,4‐bis(hydroxymethyl)benzene ( 2 ) and 1,3,5‐tris(hydroxymethyl)benzene ( 3 ) with trifluoromethanesulfonic anhydride in the presence of 2,6‐di‐tert‐butylpyridine. These benzylic triflate esters were applied in‐situ for the living polymerization of tetrahydrofuran (THF). The subsequent end‐capping reaction with a suitable nucleophile proceeded quantitatively to produce mono, bi‐ and, in particular, novel trifunctional telechelic poly(THF)s, respectively.
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