{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,12]],"date-time":"2026-09-12T10:15:25Z","timestamp":1789208125505,"version":"build-2803163510"},"reference-count":52,"publisher":"Wiley","issue":"33","license":[{"start":{"date-parts":[[2025,6,25]],"date-time":"2025-06-25T00:00:00Z","timestamp":1750809600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001843","name":"Science and Engineering Research Board","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001843","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":[[2025,8,11]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Given the significance of strain\u2010release reactions, various spring\u2010loaded molecules have emerged as important building blocks in diverse fields of chemical science. Despite progress in this area, oxaquadricyclanes remain an understudied class of molecules. In the present report, the strain energy of in situ generated oxaquadricyclane was utilized for benzannulation reaction, which was photocatalyzed by a polyoxometalate (POM)\u2010based photocatalyst ({Mo\u2087O\n                    <jats:sub>24<\/jats:sub>\n                    @\u03b3\u2010FeO(OH)}), in which the Anderson\u2010type polyoxomolybdate [Mo\u2087O\u2082\u2084]\u2076\u207b anions enhance the stability of photoactive \u03b3\u2010FeO(OH) nanocore. The band alignment of this POM\u2010based complete inorganic semiconductor enables the harvesting of photons from visible light and provides superior thermal and oxidative stability while addressing the cost and performance limitations of conventional organo\u2010photocatalysts. Using this novel photocatalyst, we successfully synthesized benzindene and dihydrophenanthrene scaffolds from dienyl sulfoxonium ylides and electron\u2010deficient alkynes through unusual photochemical rearrangements. These benzannulated compounds are notable for their structural similarity to bioactive aromatic steroids and demonstrate their potential as lead candidates for therapeutic development. Through systematic optimization and mechanistic studies, we highlight the critical role of the POM catalyst, the challenges of controlling strain energy\u2010driven reactivity, and the selective rearrangement of oxaquadricyclane scaffolds.\n                  <\/jats:p>","DOI":"10.1002\/anie.202507189","type":"journal-article","created":{"date-parts":[[2025,6,17]],"date-time":"2025-06-17T06:30:41Z","timestamp":1750141841000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Strain\u2010Induced Benzannulation of Oxaquadricyclanes Promoted by a Polyoxometalate Photocatalyst"],"prefix":"10.1002","volume":"64","author":[{"given":"Daksh S.","family":"Davas","sequence":"first","affiliation":[{"name":"Department of Chemistry Indian Institute of Technology Delhi  Hauz Khas New Delhi 110016 India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laxmikanta","family":"Mallick","sequence":"additional","affiliation":[{"name":"Department of Chemistry Indian Institute of Technology Delhi  Hauz Khas New Delhi 110016 India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dinesh K.","family":"Gopalakrishnan","sequence":"additional","affiliation":[{"name":"Department of Chemistry Indian Institute of Technology Delhi  Hauz Khas New Delhi 110016 India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Biswarup","family":"Chakraborty","sequence":"additional","affiliation":[{"name":"Department of Chemistry Indian Institute of Technology Delhi  Hauz Khas New Delhi 110016 India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4068-5916","authenticated-orcid":false,"given":"Janakiram","family":"Vaitla","sequence":"additional","affiliation":[{"name":"Department of Chemistry Indian Institute of Technology Delhi  Hauz Khas New Delhi 110016 India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,6,25]]},"reference":[{"key":"e_1_2_7_1_1","doi-asserted-by":"publisher","DOI":"10.1039\/D0CC01771J"},{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.3c08206"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacsau.3c00014"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-024-50356-3"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-023-44653-6"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41557-022-00979-0"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-024-50434-6"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1038\/s44160-024-00659-6"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-024-52419-x"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-024-47169-9"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41929-024-01239-9"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-024-48494-9"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.202300008"},{"key":"e_1_2_7_14_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202214049"},{"key":"e_1_2_7_15_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202304471"},{"key":"e_1_2_7_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202409226"},{"key":"e_1_2_7_17_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja069035a"},{"key":"e_1_2_7_18_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200503374"},{"key":"e_1_2_7_19_1","doi-asserted-by":"publisher","DOI":"10.1002\/cphc.202300806"},{"key":"e_1_2_7_20_1","doi-asserted-by":"publisher","DOI":"10.1021\/acscatal.8b03498"},{"key":"e_1_2_7_21_1","doi-asserted-by":"publisher","DOI":"10.1039\/D1NA00408E"},{"key":"e_1_2_7_22_1","doi-asserted-by":"publisher","DOI":"10.1021\/acscatal.3c04284"},{"key":"e_1_2_7_23_1","doi-asserted-by":"publisher","DOI":"10.1039\/D1NR00397F"},{"key":"e_1_2_7_24_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.202203033"},{"key":"e_1_2_7_25_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.orglett.2c03388"},{"key":"e_1_2_7_26_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacsau.3c00802"},{"key":"e_1_2_7_27_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.orglett.3c03570"},{"key":"e_1_2_7_28_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tet.2009.03.090"},{"key":"e_1_2_7_29_1","doi-asserted-by":"publisher","DOI":"10.1021\/cr010016n"},{"key":"e_1_2_7_30_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.orglett.3c03148"},{"key":"e_1_2_7_31_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.orglett.4c04659"},{"key":"e_1_2_7_32_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tetlet.2010.07.031"},{"key":"e_1_2_7_33_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejmech.2021.114030"},{"key":"e_1_2_7_34_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0031-9422(96)00579-1"},{"key":"e_1_2_7_35_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja01483a051"},{"key":"e_1_2_7_36_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201803102"},{"key":"e_1_2_7_37_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacsau.2c00641"},{"key":"e_1_2_7_38_1","doi-asserted-by":"publisher","DOI":"10.1039\/c3tc32152e"},{"key":"e_1_2_7_39_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00253-018-8968-7"},{"key":"e_1_2_7_40_1","doi-asserted-by":"publisher","DOI":"10.1038\/ja.2015.114"},{"key":"e_1_2_7_41_1","unstructured":"These data can be obtained free of chargeviathe joint Cambridge Crystallographic Data Centre (CCDC) and Fachinformationszentrum Karlsruhe Access Structures service."},{"key":"e_1_2_7_42_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja00806a030"},{"key":"e_1_2_7_43_1","doi-asserted-by":"publisher","DOI":"10.1039\/D0OB00563K"},{"key":"e_1_2_7_44_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja01025a059"},{"key":"e_1_2_7_45_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.accounts.0c00235"},{"key":"e_1_2_7_46_1","doi-asserted-by":"publisher","DOI":"10.1039\/C5OB00632E"},{"key":"e_1_2_7_47_1","doi-asserted-by":"publisher","DOI":"10.1039\/b811284c"},{"key":"e_1_2_7_48_1","doi-asserted-by":"publisher","DOI":"10.1039\/C7TA04259K"},{"key":"e_1_2_7_49_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.joc.2c02758"},{"key":"e_1_2_7_50_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajoc.202300632"},{"key":"e_1_2_7_51_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.orglett.8b02068"},{"key":"e_1_2_7_52_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.orglett.2c03666"}],"container-title":["Angewandte Chemie International Edition"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/anie.202507189","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,12,1]],"date-time":"2025-12-01T14:54:22Z","timestamp":1764600862000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/anie.202507189"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,6,25]]},"references-count":52,"journal-issue":{"issue":"33","published-print":{"date-parts":[[2025,8,11]]}},"alternative-id":["10.1002\/anie.202507189"],"URL":"https:\/\/doi.org\/10.1002\/anie.202507189","archive":["Portico"],"relation":{},"ISSN":["1433-7851","1521-3773"],"issn-type":[{"value":"1433-7851","type":"print"},{"value":"1521-3773","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,6,25]]},"assertion":[{"value":"2025-03-31","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-06-17","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-06-25","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e202507189"}}