{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T00:48:39Z","timestamp":1790729319817,"version":"4.1.0"},"reference-count":44,"publisher":"Wiley","issue":"13","license":[{"start":{"date-parts":[[2023,1,20]],"date-time":"2023-01-20T00:00:00Z","timestamp":1674172800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"publisher","award":["Wa 1386\/16.2"],"award-info":[{"award-number":["Wa 1386\/16.2"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2023,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Acetals and ketals are among the most important protecting groups for carbonyl compounds. A new method for acetalization and ketalization by means of photoredox catalysis has been developed. A biscyanolated perylene bisimide is used as an electron\u2010poor photocatalyst, together with green light (525\u2005nm LED). Silylenolethers derived from aldehydes react efficiently to give acetals in good to excellent yields. A broad substrate range was shown with respect to both the aldehydes and the alcohols. The functional group tolerance is high; in particular, acid\u2010 and hydrogen\u2010labile protecting groups are tolerated. Aldehydes can also be directly and selectively converted into the respective acetals. Only ketones must be converted to their silylenolethers before ketalization. This photocatalytic method works without any use of acids or photoacids, and does not need any additives or H\u2010atom transfer reagents. Hence, it broadens the substrate scope and repertoire of photoredox catalysis with respect to carbonyl chemistry.<\/jats:p>","DOI":"10.1002\/chem.202203767","type":"journal-article","created":{"date-parts":[[2022,12,16]],"date-time":"2022-12-16T09:28:41Z","timestamp":1671182921000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Photocatalytic Synthesis of Acetals and Ketals from Aldehydes and Silylenolethers without the Use of Acids"],"prefix":"10.1002","volume":"29","author":[{"given":"Desir\u00e9e","family":"Steuernagel","sequence":"first","affiliation":[{"name":"Institute of Organic Chemistry Karlsruhe Institute of Technology (KIT)  Fritz-Haber-Weg 6 76131 Karlsruhe Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4849-2887","authenticated-orcid":false,"given":"Hans\u2010Achim","family":"Wagenknecht","sequence":"additional","affiliation":[{"name":"Institute of Organic Chemistry Karlsruhe Institute of Technology (KIT)  Fritz-Haber-Weg 6 76131 Karlsruhe Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2023,1,20]]},"reference":[{"key":"e_1_2_8_1_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200602780"},{"key":"e_1_2_8_1_2","doi-asserted-by":"publisher","DOI":"10.1002\/ange.200602780"},{"key":"e_1_2_8_2_1","doi-asserted-by":"crossref","unstructured":"B.\u2005A. 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