{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T10:57:17Z","timestamp":1785322637302,"version":"3.55.0"},"reference-count":56,"publisher":"Wiley","issue":"15","license":[{"start":{"date-parts":[[2026,2,6]],"date-time":"2026-02-06T00:00:00Z","timestamp":1770336000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,2,6]],"date-time":"2026-02-06T00:00:00Z","timestamp":1770336000000},"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":[[2026,4,22]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>The development of innovative and sustainable synthetic methodologies is crucial to address the increasing demand for environmentally benign practices in all domains of organic chemistry. In this regard, harnessing visible light as the sole energy input is particularly attractive. Diazo compounds, being highly versatile reagents with notable reactivity and ready accessibility, are well\u2010suited for photochemical activation, which offers a promising, eco\u2010friendly alternative to traditional transition\u2010metal\u2010catalyzed processes. In this perspective, we report generalized photochemical pathways for the synthesis of benzene fused 1,4\u2010 and 1,3\u2010diazines from 1,4\u2010 and 1,5\u2010aza bis\u2010nucleophiles and various diazo compounds, employing water as the sole and distinct solvent under aerobic presence. These protocols involve the direct photoinduced generation of carbenes from diazo compounds, averting the need of any photocatalyst, which then opts [4+2] or [5+1]\u2010annulation pathway and offers distinct products. The detailed insights into the reaction pathways are investigated through several control experiments and DFT studies. Strategically it is also possible to construct a 5\u2010membered aza\u2010heterocyclic core applying the same photochemical approach. Finally, the late\u2010stage modifications of quinoxalinone and quinoxaline scaffold applying the photoinduced C\u2010H activation technique generate the structurally diverse spiroindene compounds, including steroid\u2010embedded di\u2010aza heterocycle.<\/jats:p>","DOI":"10.1002\/chem.70755","type":"journal-article","created":{"date-parts":[[2026,2,6]],"date-time":"2026-02-06T12:03:02Z","timestamp":1770379382000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Visible\u2010Light\u2010Promoted Access to Fused Aza\u2010Heterocyclic Frameworks"],"prefix":"10.1002","volume":"32","author":[{"given":"Saiful","family":"Islam","sequence":"first","affiliation":[{"name":"Department of Chemistry University of Calcutta  West Bengal India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2754-5812","authenticated-orcid":false,"given":"Dwaipayan","family":"Das","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Calcutta  West Bengal India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Swarnali","family":"Ghosh","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Calcutta  West Bengal India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rahul Dev","family":"Mandal","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Calcutta  West Bengal India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Akhilesh","family":"Mahato","sequence":"additional","affiliation":[{"name":"Department of Chemistry Sidho\u2010Kanho\u2010Birsha University  West Bengal India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9721-8310","authenticated-orcid":false,"given":"Anup","family":"Pramanik","sequence":"additional","affiliation":[{"name":"Department of Chemistry Sidho\u2010Kanho\u2010Birsha University  West Bengal India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8900-550X","authenticated-orcid":false,"given":"Asish R.","family":"Das","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Calcutta  West Bengal India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,2,6]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.3390\/molecules25081909"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejmech.2021.114085"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/slct.202301401"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejmech.2018.03.076"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejmech.2017.11.064"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1021\/ml300246r"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.3390\/molecules25081889"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.bmc.2010.09.065"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1021\/ol2012378"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dyepig.2019.04.005"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.synthmet.2020.116619"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.3390\/ph16040534"},{"key":"e_1_2_7_14_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jafc.0c02101"},{"key":"e_1_2_7_15_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jafc.0c04278"},{"key":"e_1_2_7_16_1","doi-asserted-by":"publisher","DOI":"10.2174\/1385272827666221227114713"},{"key":"e_1_2_7_17_1","doi-asserted-by":"publisher","DOI":"10.1080\/10406638.2023.2167215"},{"key":"e_1_2_7_18_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.orglett.4c01624"},{"key":"e_1_2_7_19_1","doi-asserted-by":"publisher","DOI":"10.1039\/D5QO00864F"},{"key":"e_1_2_7_20_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.oprd.6b00125"},{"key":"e_1_2_7_21_1","doi-asserted-by":"publisher","DOI":"10.1039\/C6NP00070C"},{"key":"e_1_2_7_22_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.0c01416"},{"key":"e_1_2_7_23_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.1c00247"},{"key":"e_1_2_7_24_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.1c00467"},{"key":"e_1_2_7_25_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.2c00478"},{"key":"e_1_2_7_26_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.trechm.2019.01.008"},{"key":"e_1_2_7_27_1","doi-asserted-by":"publisher","DOI":"10.1039\/D2OB00381C"},{"key":"e_1_2_7_28_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.joc.4c01856"},{"key":"e_1_2_7_29_1","doi-asserted-by":"publisher","DOI":"10.1039\/c3ra40706c"},{"key":"e_1_2_7_30_1","doi-asserted-by":"publisher","DOI":"10.1021\/cr00028a010"},{"key":"e_1_2_7_31_1","doi-asserted-by":"publisher","DOI":"10.1039\/C8OB02703J"},{"key":"e_1_2_7_32_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.202500414"},{"key":"e_1_2_7_33_1","doi-asserted-by":"publisher","DOI":"10.6023\/cjoc202401018"},{"key":"e_1_2_7_34_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.202301227"},{"key":"e_1_2_7_35_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajoc.202000276"},{"key":"e_1_2_7_36_1","doi-asserted-by":"publisher","DOI":"10.1039\/C8SC01165F"},{"key":"e_1_2_7_37_1","doi-asserted-by":"publisher","DOI":"10.1021\/acssuschemeng.1c01976"},{"key":"e_1_2_7_38_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.3c00869"},{"key":"e_1_2_7_39_1","doi-asserted-by":"publisher","DOI":"10.1002\/ejoc.202500329"},{"key":"e_1_2_7_40_1","doi-asserted-by":"publisher","DOI":"10.1002\/ejoc.202400784"},{"key":"e_1_2_7_41_1","doi-asserted-by":"publisher","DOI":"10.1039\/D0CS00224K"},{"key":"e_1_2_7_42_1","doi-asserted-by":"publisher","DOI":"10.1039\/D3CC00988B"},{"key":"e_1_2_7_43_1","doi-asserted-by":"publisher","DOI":"10.1055\/sos-SD-206-00000"},{"key":"e_1_2_7_44_1","doi-asserted-by":"publisher","DOI":"10.1002\/9780470988817"},{"key":"e_1_2_7_45_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.joc.2c00805"},{"key":"e_1_2_7_46_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.2c12274"},{"key":"e_1_2_7_47_1","doi-asserted-by":"publisher","DOI":"10.1039\/C8SC01999A"},{"key":"e_1_2_7_48_1","doi-asserted-by":"publisher","DOI":"10.1039\/D5CC04527D"},{"key":"e_1_2_7_49_1","doi-asserted-by":"publisher","DOI":"10.6023\/cjoc202109035"},{"key":"e_1_2_7_50_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tetlet.2012.02.077"},{"key":"e_1_2_7_51_1","doi-asserted-by":"publisher","DOI":"10.1039\/C8SC01165F"},{"key":"e_1_2_7_52_1","unstructured":"M. J.Frisch G. W.Trucks andH. B.Schlegel G16_C01(Gaussian Inc. 2016)."},{"key":"e_1_2_7_53_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cplett.2004.06.011"},{"key":"e_1_2_7_54_1","doi-asserted-by":"publisher","DOI":"10.1063\/1.2370993"},{"key":"e_1_2_7_55_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.1705670114"},{"key":"e_1_2_7_56_1","doi-asserted-by":"publisher","DOI":"10.1039\/D4CP03583F"},{"key":"e_1_2_7_57_1","unstructured":"Deposition Number(s)2491223 (for3f) 2491224 (for5e) 2491425 (for9b) Contain(s) the Supplementary Crystallographic Data for this Paper. These Data Are Provided Free of Charge by the Joint Cambridge Crystallographic Data Centre and Fachinformationszentrum Karlsruhe Access Structures service."}],"container-title":["Chemistry \u2013 A European Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/chem.70755","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/chem.70755","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/chem.70755","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,24]],"date-time":"2026-04-24T10:49:30Z","timestamp":1777027770000},"score":1,"resource":{"primary":{"URL":"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/10.1002\/chem.70755"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,2,6]]},"references-count":56,"journal-issue":{"issue":"15","published-print":{"date-parts":[[2026,4,22]]}},"alternative-id":["10.1002\/chem.70755"],"URL":"https:\/\/doi.org\/10.1002\/chem.70755","archive":["Portico"],"relation":{},"ISSN":["0947-6539","1521-3765"],"issn-type":[{"value":"0947-6539","type":"print"},{"value":"1521-3765","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,2,6]]},"assertion":[{"value":"2025-11-28","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-01-23","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-02-06","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e70755"}}