{"title":"Iodo-Annulations of N-Benzyl-propiolamides Leading To Azaspiro[5.5]undecatrienones or Benzo[c]azepinones","authors":"Chada Raji Reddy, Thallamapuram Nagendraprasad, Jannatul Islam, Uprety Ajaykumar, Cirandur Suresh Reddy, Srivari Chandrasekhar","doi":"10.1055/a-2349-6736","DOIUrl":null,"url":null,"abstract":"<p>Iodine-mediated oxidative annulations of <i>N</i>-benzyl-propiolamides are disclosed for the first time, providing either azaspiro[5.5]undecatrienones via dearomative <i>ipso</i>-annulation or benzo[<i>c</i>]azepinones through <i>ortho</i>-annulation. The selective construction of the aforementioned products is based on the ceric ammonium nitrate (CAN)-promoted divergent reactivity of the propiolamide, directed by the substituents on the phenyl ring of the <i>N</i>-benzyl group.</p> ","PeriodicalId":501298,"journal":{"name":"Synthesis","volume":"9 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Synthesis","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1055/a-2349-6736","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Iodine-mediated oxidative annulations of N-benzyl-propiolamides are disclosed for the first time, providing either azaspiro[5.5]undecatrienones via dearomative ipso-annulation or benzo[c]azepinones through ortho-annulation. The selective construction of the aforementioned products is based on the ceric ammonium nitrate (CAN)-promoted divergent reactivity of the propiolamide, directed by the substituents on the phenyl ring of the N-benzyl group.
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