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Renewable Polyethers via GaBr 3 ‐Catalyzed Reduction of Polyesters
Author(s) -
Dannecker PatrickKurt,
Biermann Ursula,
von Czapiewski Marc,
Metzger Jürgen O.,
Meier Michael A. R.
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201804368
Subject(s) - polyester , catalysis , reduction (mathematics) , chemistry , organic chemistry , mathematics , geometry
Herein, a novel approach is reported for the synthesis of medium‐ and long‐chain aliphatic polyethers 2 based on the GaBr 3 ‐catalysed reduction of polyesters 1 with TMDS as the reducing agent. Thus, various linear and branched aliphatic polyesters 1 were prepared and systematically investigated for this reduction strategy, demonstrating the applicability and versatility of this new polyether synthesis protocol. Medium‐ and long‐chain chain polyethers were obtained from the respective polyesters without or with minor chain degradation, whereas short‐chain polyesters, such as poly‐ l ‐lactide 1 i and poly[( R )‐3‐hydroxybutanoate] 1 j , showed major chain degradation. In this way, previously unavailable and uncommon polyethers were obtained and studied.