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Keywords:

  • catalysis;
  • depolymerization;
  • iron;
  • polymers;
  • ring closing
Thumbnail image of graphical abstract

Closed encounter: Inexpensive and abundant FeCl3 is demonstrated as an effective pre-catalyst for the ring-closing depolymerization of polytetrahydrofuran (polyTHF) to produce tetrahydrofuran (THF) in high purity and good yields. The protocol is of interest for efficient waste management of end-life polyTHF, and the produced THF is a suitable starting material for new polymeric materials, allowing for an overall efficient recycling process