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Herein, we report that the combination of ZnCl\n                    <jats:sub>2<\/jats:sub>\n                    and an additive amount of poly(ethylene glycol) under vacuum can readily and selectively depolymerize polyesters and polycarbonates with high ceiling temperatures (\n                    <jats:italic>T<\/jats:italic>\n                    <jats:sub>c<\/jats:sub>\n                    &gt;200\u2009\u00b0C) back to their constitute monomers. Mechanistic experiments implicate a random chain scission mechanism and a catalyst structure containing one equivalent of ZnCl\n                    <jats:sub>2<\/jats:sub>\n                    per ethylene glycol repeat unit in the poly(ethylene glycol). In addition to being general for a wide variety of polyesters and polycarbonates, the catalyst system could selectively depolymerize a polyester in the presence of other commodity plastics, demonstrating how reactive distillation using the ZnCl\n                    <jats:sub>2<\/jats:sub>\n                    \/PEG600 catalyst system can be used to separate mixed plastic waste.\n                  <\/jats:p>","DOI":"10.1002\/anie.202303762","type":"journal-article","created":{"date-parts":[[2023,4,24]],"date-time":"2023-04-24T13:54:30Z","timestamp":1682344470000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":113,"title":["A Simple, Selective, and General Catalyst for Ring Closing Depolymerization of Polyesters and Polycarbonates for Chemical Recycling"],"prefix":"10.1002","volume":"62","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0722-9110","authenticated-orcid":false,"given":"Connor F.","family":"Gallin","sequence":"first","affiliation":[{"name":"Department of Chemistry Boston College  2609 Beacon Street Chestnut Hill MA 02467 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Won\u2010Woo","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Chemistry Boston College  2609 Beacon Street Chestnut Hill MA 02467 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8109-674X","authenticated-orcid":false,"given":"Jeffery A.","family":"Byers","sequence":"additional","affiliation":[{"name":"Department of Chemistry Boston College  2609 Beacon Street Chestnut Hill MA 02467 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2023,5,10]]},"reference":[{"key":"e_1_2_3_1_1","unstructured":"\u00a0"},{"key":"e_1_2_3_2_2","doi-asserted-by":"publisher","DOI":"10.1038\/s41578-020-0190-4"},{"key":"e_1_2_3_3_2","doi-asserted-by":"publisher","DOI":"10.1038\/s41578-021-00382-0"},{"key":"e_1_2_3_4_2","doi-asserted-by":"publisher","DOI":"10.1039\/C7GC01496A"},{"key":"e_1_2_3_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.wasman.2017.07.044"},{"key":"e_1_2_3_6_1","doi-asserted-by":"publisher","DOI":"10.1088\/1748-9326\/ab9e1e"},{"key":"e_1_2_3_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chempr.2021.10.004"},{"key":"e_1_2_3_8_1","doi-asserted-by":"publisher","DOI":"10.1038\/162705a0"},{"key":"e_1_2_3_9_1","doi-asserted-by":"publisher","DOI":"10.1038\/nchem.2391"},{"key":"e_1_2_3_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201601092"},{"key":"e_1_2_3_11_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsmacrolett.6b00193"},{"key":"e_1_2_3_12_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202201407"},{"key":"e_1_2_3_13_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.aar5498"},{"key":"e_1_2_3_14_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201813006"},{"key":"e_1_2_3_15_1","doi-asserted-by":"publisher","DOI":"10.1039\/C5PY01606A"},{"key":"e_1_2_3_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chempr.2021.02.003"},{"key":"e_1_2_3_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cep.2015.09.004"},{"key":"e_1_2_3_18_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.biomac.6b01375"},{"key":"e_1_2_3_19_1","doi-asserted-by":"publisher","DOI":"10.1002\/pol.1968.110060909"},{"key":"e_1_2_3_20_1","first-page":"14763","volume":"5","author":"Alberti C.","year":"2020","journal-title":"ChemistrySelect"},{"key":"e_1_2_3_21_1","unstructured":"\u201cContinuous process for the manufacture of lactide and lactide polymers\u201d P.\u2005R. Gruber E.\u2005S. Hall J.\u2005J. Kolstad M.\u2005L. Iwen R.\u2005D. Benson R.\u2005L. Borchardt U.S. Patent 6 277 951 2001."},{"key":"e_1_2_3_22_1","first-page":"67","volume-title":"Synthesis, Structure and Properties of Poly(lactic acid)","author":"Byers J.","year":"2018"},{"key":"e_1_2_3_23_1","doi-asserted-by":"publisher","DOI":"10.1023\/A:1020200822435"},{"key":"e_1_2_3_24_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202204531"},{"key":"e_1_2_3_25_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.biomac.5b01698"},{"key":"e_1_2_3_26_1","first-page":"113","volume":"10","author":"Job P.","year":"1928","journal-title":"Ann. 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