{"title":"Construction of 1,4‐Oxazepinones via a Cascade Aza‐Michael/SN2 Annulation of Trifluoromethyl Pyrazole‐Derived Oxadienes with a‐Bromohydroxamates","authors":"","doi":"10.1002/ajoc.202400244","DOIUrl":null,"url":null,"abstract":"<div><div>A highly efficient cascade aza‐MIRC (Michael Induced Ring Closure) reaction between trifluoromethylpyrazole (TFPZ)‐derived oxadienes and <em>a</em>‐bromohydroxamates has been developed for the construction of 1,4‐oxazepinone derivatives. The reaction proceeds smoothly under mild conditions <em>via</em> a cascade Aza‐Michael addition/intramolecular S<sub>N</sub>2 sequence, and features broad substrate scope, transition‐metal free, operational simplicity etc. The utility of the versatile protocol was also demonstrated by gram‐scale reaction and valuable synthetic transformations.</div></div>","PeriodicalId":130,"journal":{"name":"Asian Journal of Organic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.8000,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Asian Journal of Organic Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/org/science/article/pii/S2193580724002770","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, ORGANIC","Score":null,"Total":0}
引用次数: 0
Abstract
A highly efficient cascade aza‐MIRC (Michael Induced Ring Closure) reaction between trifluoromethylpyrazole (TFPZ)‐derived oxadienes and a‐bromohydroxamates has been developed for the construction of 1,4‐oxazepinone derivatives. The reaction proceeds smoothly under mild conditions via a cascade Aza‐Michael addition/intramolecular SN2 sequence, and features broad substrate scope, transition‐metal free, operational simplicity etc. The utility of the versatile protocol was also demonstrated by gram‐scale reaction and valuable synthetic transformations.
期刊介绍：
Organic chemistry is the fundamental science that stands at the heart of chemistry, biology, and materials science. Research in these areas is vigorous and truly international, with three major regions making almost equal contributions: America, Europe and Asia. Asia now has its own top international organic chemistry journal—the Asian Journal of Organic Chemistry (AsianJOC)
The AsianJOC is designed to be a top-ranked international research journal and publishes primary research as well as critical secondary information from authors across the world. The journal covers organic chemistry in its entirety. Authors and readers come from academia, the chemical industry, and government laboratories.
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