{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T02:44:43Z","timestamp":1790045083852,"version":"4.0.1"},"reference-count":110,"publisher":"Wiley","issue":"40","license":[{"start":{"date-parts":[[2022,9,2]],"date-time":"2022-09-02T00:00:00Z","timestamp":1662076800000},"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":["Ba 1372\/22-1"],"award-info":[{"award-number":["Ba 1372\/22-1"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Angew Chem Int Ed"],"published-print":{"date-parts":[[2022,10,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>While 2\u2010alk\u2010\u03c9\u2010enyloxy\u2010sustituted benzaldehydes do not display any photochemical reactivity at the arene core, the respective iminium perchlorates were found to undergo efficient reactions either upon direct irradiation (\u03bb=366\u2005nm) or under sensitizing conditions (\u03bb=420\u2005nm, 2.5\u2005mol% thioxanthen\u20109\u2010one). Three pathways were found: (a)\u2005Most commonly, the reaction led to benzoxacyclic products in which the olefin in the tether underwent a formal, yet unprecedented carboformylation (13 examples, 44\u201399\u2009% yield). The cascade process occurred with high diastereoselectivity and was found to be stereoconvergent. (b)\u2005If a substituent resides in the 3\u2010position of the benzene ring, a <jats:italic>meta<\/jats:italic> photocycloaddition was observed which produced tetracyclic skeletons with five stereogenic centers in excellent regio\u2010 and diastereoselectivity (2 examples, 58\u201379\u2009% yield). (c)\u2005If the tether was internally substituted at the alkene, an arene photocycloaddition was avoided and an azetidine was formed in an aza Patern\u00f2\u2013B\u00fcchi reaction (2 examples, 95\u201398\u2009% yield).<\/jats:p>","DOI":"10.1002\/anie.202208329","type":"journal-article","created":{"date-parts":[[2022,8,3]],"date-time":"2022-08-03T13:39:11Z","timestamp":1659533951000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Arene Activation through Iminium Ions: Product Diversity from Intramolecular Photocycloaddition Reactions"],"prefix":"10.1002","volume":"61","author":[{"given":"Johanna","family":"Proessdorf","sequence":"first","affiliation":[{"name":"Department Chemie and Catalysis Research Center (CRC) School of Natural Sciences Technische Universit\u00e4t M\u00fcnchen  Lichtenbergstra\u00dfe 4 85747 Garching Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christian","family":"Jandl","sequence":"additional","affiliation":[{"name":"Department Chemie and Catalysis Research Center (CRC) School of Natural Sciences Technische Universit\u00e4t M\u00fcnchen  Lichtenbergstra\u00dfe 4 85747 Garching Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Pickl","sequence":"additional","affiliation":[{"name":"Department Chemie and Catalysis Research Center (CRC) School of Natural Sciences Technische Universit\u00e4t M\u00fcnchen  Lichtenbergstra\u00dfe 4 85747 Garching Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1342-0202","authenticated-orcid":false,"given":"Thorsten","family":"Bach","sequence":"additional","affiliation":[{"name":"Department Chemie and Catalysis Research Center (CRC) School of Natural Sciences Technische Universit\u00e4t M\u00fcnchen  Lichtenbergstra\u00dfe 4 85747 Garching Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,9,2]]},"reference":[{"key":"e_1_2_7_1_1","unstructured":"For reviews covering arene-alkene photocycloadditions in general see:"},{"key":"e_1_2_7_2_2","doi-asserted-by":"publisher","DOI":"10.1039\/D0OB01204A"},{"key":"e_1_2_7_3_2","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.6b00005"},{"key":"e_1_2_7_4_2","doi-asserted-by":"publisher","DOI":"10.1039\/c2pp25074h"},{"key":"e_1_2_7_5_2","doi-asserted-by":"publisher","DOI":"10.3762\/bjoc.7.61"},{"key":"e_1_2_7_6_2","doi-asserted-by":"publisher","DOI":"10.2533\/chimia.2008.962"},{"key":"e_1_2_7_7_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200603337"},{"key":"e_1_2_7_7_3","doi-asserted-by":"publisher","DOI":"10.1002\/ange.200603337"},{"key":"e_1_2_7_8_2","doi-asserted-by":"publisher","DOI":"10.1055\/s-2004-815973"},{"key":"e_1_2_7_9_2","doi-asserted-by":"publisher","DOI":"10.1021\/cr00080a008"},{"key":"e_1_2_7_10_1","unstructured":"For pioneering studies on benzene-alkene photocycloaddition reactions see:"},{"key":"e_1_2_7_11_2","first-page":"326","author":"Angus H. J. F.","year":"1959","journal-title":"Proc. Chem. Soc."},{"key":"e_1_2_7_12_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0040-4039(01)99362-1"},{"key":"e_1_2_7_13_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0040-4039(01)99227-5"},{"key":"e_1_2_7_14_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja01477a018"},{"key":"e_1_2_7_15_2","first-page":"512","author":"Bryce-Smith D.","year":"1966","journal-title":"Chem. 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