The effective degradation of formaldehyde polymers catalyzed by Y(OTf) 3 with indole derivatives in water has been achieved, yielding a series of diindolylmethane compounds with added value. It provides a new route with additional potential for the upcycling of waste paraformaldehyde and polyoxymethylene plastic as a green alternative C1 synthon.
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Guo et al. (2026) studied this question.
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