{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,13]],"date-time":"2026-08-13T16:37:31Z","timestamp":1786639051450,"version":"build-2736575974"},"reference-count":52,"publisher":"Wiley","issue":"30","license":[{"start":{"date-parts":[[2025,12,5]],"date-time":"2025-12-05T00:00:00Z","timestamp":1764892800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2025,12,5]],"date-time":"2025-12-05T00:00:00Z","timestamp":1764892800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2026,8,13]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    In the domain of bottom\u2010up approach, regioselective fusion of aromatic moiety onto an arene templet remains scarcely explored, yet represents a crucial tool for the rapid generation of polycyclic aromatic hydrocarbons (PAHs). An unprecedented bottom\u2010up strategy for the rapid construction of PAHs is developed by employing arene\u2010derived ketones and carbon\u2010rich 1,3\u2010diynes. Many of these synthesized PAHs have tilted \u03c0\u2010electronic structure, unique edges and topologies. A range of arene\u2010derived ketones participated in this annulative\u2010\u03c0\u2010extension\u2010cyclization cascade under first\u2010row Co(III)\u2010catalysis. Electronic nature of the 1,3\u2010diynes guided the final mode of cyclization leading to the formal fusing of one fluorene moiety via 5\u2010\n                    <jats:italic>exo<\/jats:italic>\n                    \u2010dig cyclization or phenanthrene nucleus through 6\u2010\n                    <jats:italic>endo<\/jats:italic>\n                    \u2010dig cyclization. Intermediate ethynyl\u2010PAHs were also isolated in case of relatively electron\u2010deficient diynes. The contorted \u03c0\u2010planes of the synthesized PAHs were elucidated by single\u2010crystal X\u2010ray analysis. Detailed DFT studies reinforce the proposed mechanistic pathway, validating the formation of the major regioisomer of PAHs. Furthermore, less aromatic character of fluorene moiety over phenanthrene nucleus is supported by the NICS(1)\n                    <jats:sub>zz<\/jats:sub>\n                    and ACID calculations.\n                  <\/jats:p>","DOI":"10.1002\/chem.202502972","type":"journal-article","created":{"date-parts":[[2025,12,6]],"date-time":"2025-12-06T05:41:33Z","timestamp":1764999693000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Bottom\u2010Up Approach for the Synthesis of Contorted Nanographenes by Cp*Co(III)\u2010Catalyzed Annulative\u2010\u03c0\u2010Extension\u2010Cyclization Cascade"],"prefix":"10.1002","volume":"32","author":[{"given":"Arya","family":"Bhattacharyya","sequence":"first","affiliation":[{"name":"Department of Chemistry Indian Institute of Technology Kharagpur  Kharagpur India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abhisek","family":"Metya","sequence":"additional","affiliation":[{"name":"Department of Chemistry Indian Institute of Technology Kharagpur  Kharagpur India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9647-2683","authenticated-orcid":false,"given":"Modhu Sudan","family":"Maji","sequence":"additional","affiliation":[{"name":"Department of Chemistry Indian Institute of Technology Kharagpur  Kharagpur India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,12,5]]},"reference":[{"key":"e_1_2_5_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201409932"},{"key":"e_1_2_5_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201604741"},{"key":"e_1_2_5_4_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.0c01856"},{"key":"e_1_2_5_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201701058"},{"key":"e_1_2_5_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201707486"},{"key":"e_1_2_5_7_1","doi-asserted-by":"publisher","DOI":"10.1038\/ncomms7251"},{"key":"e_1_2_5_8_1","doi-asserted-by":"publisher","DOI":"10.1021\/jo402313c"},{"key":"e_1_2_5_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201610374"},{"key":"e_1_2_5_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201703754"},{"key":"e_1_2_5_11_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201906379"},{"key":"e_1_2_5_12_1","doi-asserted-by":"publisher","DOI":"10.1039\/C8QO00423D"},{"key":"e_1_2_5_13_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010021\u201024261\u2010y"},{"key":"e_1_2_5_14_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.orglett.2c04071"},{"key":"e_1_2_5_15_1","doi-asserted-by":"publisher","DOI":"10.1038\/352762a0"},{"key":"e_1_2_5_16_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.46.1941"},{"key":"e_1_2_5_17_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.65.035102"},{"key":"e_1_2_5_18_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.202002826"},{"key":"e_1_2_5_19_1","doi-asserted-by":"publisher","DOI":"10.1002\/poc.1644"},{"key":"e_1_2_5_20_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200905633"},{"key":"e_1_2_5_21_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja3054354"},{"key":"e_1_2_5_22_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.7b06848"},{"key":"e_1_2_5_23_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.accounts.8b00140"},{"key":"e_1_2_5_24_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201807004"},{"key":"e_1_2_5_25_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201905666"},{"key":"e_1_2_5_26_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.9b03910"},{"key":"e_1_2_5_27_1","doi-asserted-by":"publisher","DOI":"10.1039\/D0OB00182A"},{"key":"e_1_2_5_28_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.202102112"},{"key":"e_1_2_5_29_1","doi-asserted-by":"publisher","DOI":"10.1039\/D4QO02104E"},{"key":"e_1_2_5_30_1","doi-asserted-by":"publisher","DOI":"10.1021\/cr200164y"},{"key":"e_1_2_5_31_1","doi-asserted-by":"publisher","DOI":"10.1021\/jo401091w"},{"key":"e_1_2_5_32_1","doi-asserted-by":"publisher","DOI":"10.1002\/poc.3160"},{"key":"e_1_2_5_33_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201605799"},{"key":"e_1_2_5_34_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-0036-1588688"},{"key":"e_1_2_5_35_1","doi-asserted-by":"publisher","DOI":"10.1039\/C8QO00389K"},{"key":"e_1_2_5_36_1","doi-asserted-by":"publisher","DOI":"10.1039\/D5SC00617A"},{"key":"e_1_2_5_37_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.0c00825"},{"key":"e_1_2_5_38_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202006087"},{"key":"e_1_2_5_39_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201808043"},{"key":"e_1_2_5_40_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.joc.2c02280"},{"key":"e_1_2_5_41_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.202001327"},{"key":"e_1_2_5_42_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja907802g"},{"key":"e_1_2_5_43_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201002859"},{"key":"e_1_2_5_44_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202305258"},{"key":"e_1_2_5_45_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.orglett.3c03443"},{"key":"e_1_2_5_46_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.orglett.5c00854"},{"key":"e_1_2_5_47_1","unstructured":"Deposition Numbers 2383477 (3a) 2383474 (3b) and 2334693 (4c) contain the supplementary crystallographic data for this paper. These data are pro\u2010vided free of charge by the joint Cambridge Crystallographic Data Centre and Fachinformationszentrum Karlsruhe http:\/\/www.ccdc.cam.ac.uk\/structures."},{"key":"e_1_2_5_48_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202218090"},{"key":"e_1_2_5_49_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202505897"},{"key":"e_1_2_5_50_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jchemed.7b00361"},{"key":"e_1_2_5_51_1","doi-asserted-by":"publisher","DOI":"10.1021\/ol0529546"},{"key":"e_1_2_5_52_1","doi-asserted-by":"publisher","DOI":"10.3390\/chemistry6060103"},{"key":"e_1_2_5_53_1","doi-asserted-by":"publisher","DOI":"10.1021\/cr0300901"}],"container-title":["Chemistry \u2013 A European Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/chem.202502972","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/chem.202502972","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/chem.202502972","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,13]],"date-time":"2026-08-13T16:01:45Z","timestamp":1786636905000},"score":1,"resource":{"primary":{"URL":"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/10.1002\/chem.202502972"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,12,5]]},"references-count":52,"journal-issue":{"issue":"30","published-print":{"date-parts":[[2026,8,13]]}},"alternative-id":["10.1002\/chem.202502972"],"URL":"https:\/\/doi.org\/10.1002\/chem.202502972","archive":["Portico"],"relation":{},"ISSN":["0947-6539","1521-3765"],"issn-type":[{"value":"0947-6539","type":"print"},{"value":"1521-3765","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,12,5]]},"assertion":[{"value":"2025-09-27","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-11-26","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-12-05","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e02972"}}