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PS recycling is also severely hampered by the lack of financial incentive, limited versatility, and poor selectivity of existing methods. To this end, herein we report a thermochemical recycling strategy of \u201cdegradation\u2010upcycling\u201d to synthesize a library of high\u2010value aromatic chemicals from PS wastes with high versatility and selectivity. Two cascade reactions are selected to first degrade PS to benzene under mild temperatures, followed by the derivatization thereof utilizing a variety of acyl\/alkyl and sulfinyl chloride additives. To demonstrate the versatility, nine ketones and sulfides of cosmetic and pharmaceutical relevance were prepared, including propiophenone, benzophenone, and diphenyl sulfide. The approach is also amenable to sophisticated upcycling reaction designs and can produce desired products stepwise. The facile and versatile approach will provide a scalable and profitable methodology for upcycling PS waste into value\u2010added chemicals.<\/jats:p>","DOI":"10.1002\/anie.202307042","type":"journal-article","created":{"date-parts":[[2023,7,13]],"date-time":"2023-07-13T08:44:08Z","timestamp":1689237848000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":38,"title":["A Generic Platform for Upcycling Polystyrene to Aryl Ketones and Organosulfur Compounds"],"prefix":"10.1002","volume":"62","author":[{"given":"Nuwayo Eric","family":"Munyaneza","sequence":"first","affiliation":[{"name":"Department of Chemistry Virginia Tech  Blacksburg VA 24061 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carlos","family":"Posada","sequence":"additional","affiliation":[{"name":"Department of Chemistry Virginia Tech  Blacksburg VA 24061 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