{"title":"酸介导的ugi后重排对吡啶[1,2,3-de]喹啉-2,5-二酮的区域选择性构建","authors":"Mandweep Bhumij , Rehan Ahamed , Ruchir Kant , Sathish Kumar Mudedla , Ajay Kumar Srivastava","doi":"10.1039/d5cc02548f","DOIUrl":null,"url":null,"abstract":"<div><div>We report a robust method for preparing uniquely functionalized pyrido[1,2,3-<em>de</em>]quinoxaline-2,5-diones from alkynamide-containing Ugi adducts under acidic conditions. This single-step process proceeds through spirocyclization of Ugi adducts followed by intramolecular condensation and ring expansion in a highly regioselective manner. Mechanistic studies and DFT calculations were performed to establish the reaction path and possible intermediates.</div></div>","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":"61 68","pages":"Pages 12757-12760"},"PeriodicalIF":4.2000,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Regioselective construction of pyrido[1,2,3-de]quinoxaline-2,5-diones through acid-mediated post-Ugi rearrangements†\",\"authors\":\"Mandweep Bhumij , Rehan Ahamed , Ruchir Kant , Sathish Kumar Mudedla , Ajay Kumar Srivastava\",\"doi\":\"10.1039/d5cc02548f\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>We report a robust method for preparing uniquely functionalized pyrido[1,2,3-<em>de</em>]quinoxaline-2,5-diones from alkynamide-containing Ugi adducts under acidic conditions. This single-step process proceeds through spirocyclization of Ugi adducts followed by intramolecular condensation and ring expansion in a highly regioselective manner. Mechanistic studies and DFT calculations were performed to establish the reaction path and possible intermediates.</div></div>\",\"PeriodicalId\":67,\"journal\":{\"name\":\"Chemical Communications\",\"volume\":\"61 68\",\"pages\":\"Pages 12757-12760\"},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2025-08-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical Communications\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/org/science/article/pii/S1359734525016337\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Communications","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/org/science/article/pii/S1359734525016337","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Regioselective construction of pyrido[1,2,3-de]quinoxaline-2,5-diones through acid-mediated post-Ugi rearrangements†
We report a robust method for preparing uniquely functionalized pyrido[1,2,3-de]quinoxaline-2,5-diones from alkynamide-containing Ugi adducts under acidic conditions. This single-step process proceeds through spirocyclization of Ugi adducts followed by intramolecular condensation and ring expansion in a highly regioselective manner. Mechanistic studies and DFT calculations were performed to establish the reaction path and possible intermediates.
期刊介绍:
ChemComm (Chemical Communications) is renowned as the fastest publisher of articles providing information on new avenues of research, drawn from all the world''s major areas of chemical research.