{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T02:45:22Z","timestamp":1789008322769,"version":"build-2803163510"},"reference-count":88,"publisher":"Wiley","issue":"19","license":[{"start":{"date-parts":[[2024,1,22]],"date-time":"2024-01-22T00:00:00Z","timestamp":1705881600000},"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","award":["CRG\/2018\/001684 & CRG\/2022\/004022"],"award-info":[{"award-number":["CRG\/2018\/001684 & CRG\/2022\/004022"]}],"id":[{"id":"10.13039\/501100001843","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":[[2024,4,2]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Novel rhodium\u2010catalyzed [3+3] annulations of diazoenals and \u03b1\u2010amino ketones has been disclosed here. The reactivity of diazoenals has been switched from carbenoid to vinylogous NH\u2010insertion by altering acyclic to cyclic \u03b1\u2010amino ketones. In this direction, we report an efficient strategy to synthesize 1,2\u2010dihydropyridines (DHPs) and fused 1,4\u2010oxazines. Mechanistic investigation revealed that the formyl group is necessary for carbenoid [3+3] annulation and the cyclohexyl group is the dictating factor for vinylogous NH\u2010 insertion. The synthetic utility of 1,2\u2010dihydropyridines was demonstrated by synthesizing piperidine, pyrido[1,2\u2010a]indole, and 2\u2010pyridone scaffolds. Further, structural diversification of fused 1,4\u2010oxazines resulted in the short synthesis of hexahydroquinolin\u20102(1H)\u2010ones, hexahydro quinolines and tetrahydroquinolinones via ring opening rearrangement and a new oxidative deformylation, respectively.<\/jats:p>","DOI":"10.1002\/chem.202303862","type":"journal-article","created":{"date-parts":[[2024,1,2]],"date-time":"2024-01-02T10:37:11Z","timestamp":1704191831000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Rh\u2010Catalyzed Chemodivergent [3+3] Annulations of Diazoenals and \u03b1\u2010Aminoketones: Direct Synthesis of Functionalized 1,2\u2010Dihydropyridines and Fused 1,4\u2010Oxazines"],"prefix":"10.1002","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8658-9295","authenticated-orcid":false,"given":"Pratap Kumar","family":"Mandal","sequence":"first","affiliation":[{"name":"Department of Chemistry Indian Institute of Science Education &amp; Research  Bhopal Madhya Pradesh 462066"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8232-6431","authenticated-orcid":false,"given":"Sreenivas","family":"Katukojvala","sequence":"additional","affiliation":[{"name":"Department of Chemistry Indian Institute of Science Education &amp; Research  Bhopal Madhya Pradesh 462066"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,1,22]]},"reference":[{"key":"e_1_2_3_1_1","unstructured":"\u00a0"},{"key":"e_1_2_3_2_2","volume-title":"Modern Catalytic Methods for Organic Synthesis with Diazo Compounds","author":"Doyle M. 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