Takashi Okitsu*, Sahori Koyama and Takayuki Yakura*,
{"title":"5-(4-(1-乙氧基乙氧基)苯基)-1-炔烃脱芳异碘环构建螺[5.5]十一烷骨架","authors":"Takashi Okitsu*, Sahori Koyama and Takayuki Yakura*, ","doi":"10.1021/acs.joc.5c0095910.1021/acs.joc.5c00959","DOIUrl":null,"url":null,"abstract":"<p >A broadly applicable approach to the construction of spiro[5.5]undecanes through dearomative <i>ipso</i>-iodocyclization of 5-(4-(1-ethoxyethoxy)phenyl)-1-alkynes has been developed. The ethoxyethyl group has multiple functions: serving as a protecting group for the preparation of the substrates, being easily removed under the iodocyclization conditions, and suppressing the iodination of the phenolic moiety. This reaction can be performed at room temperature in an open flask using the easy-to-handle iodinating reagent bis(pyridine)iodonium hexafluorophosphate (IPy<sub>2</sub>PF<sub>6</sub>).</p>","PeriodicalId":57,"journal":{"name":"Journal of Organic Chemistry","volume":"90 24","pages":"8439–8443 8439–8443"},"PeriodicalIF":3.6000,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Construction of the Spiro[5.5]undecane Framework through Dearomative ipso-Iodocyclization of 5-(4-(1-Ethoxyethoxy)phenyl)-1-alkynes\",\"authors\":\"Takashi Okitsu*, Sahori Koyama and Takayuki Yakura*, \",\"doi\":\"10.1021/acs.joc.5c0095910.1021/acs.joc.5c00959\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >A broadly applicable approach to the construction of spiro[5.5]undecanes through dearomative <i>ipso</i>-iodocyclization of 5-(4-(1-ethoxyethoxy)phenyl)-1-alkynes has been developed. The ethoxyethyl group has multiple functions: serving as a protecting group for the preparation of the substrates, being easily removed under the iodocyclization conditions, and suppressing the iodination of the phenolic moiety. This reaction can be performed at room temperature in an open flask using the easy-to-handle iodinating reagent bis(pyridine)iodonium hexafluorophosphate (IPy<sub>2</sub>PF<sub>6</sub>).</p>\",\"PeriodicalId\":57,\"journal\":{\"name\":\"Journal of Organic Chemistry\",\"volume\":\"90 24\",\"pages\":\"8439–8443 8439–8443\"},\"PeriodicalIF\":3.6000,\"publicationDate\":\"2025-06-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Organic Chemistry\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acs.joc.5c00959\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, ORGANIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Organic Chemistry","FirstCategoryId":"1","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.joc.5c00959","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, ORGANIC","Score":null,"Total":0}
Construction of the Spiro[5.5]undecane Framework through Dearomative ipso-Iodocyclization of 5-(4-(1-Ethoxyethoxy)phenyl)-1-alkynes
A broadly applicable approach to the construction of spiro[5.5]undecanes through dearomative ipso-iodocyclization of 5-(4-(1-ethoxyethoxy)phenyl)-1-alkynes has been developed. The ethoxyethyl group has multiple functions: serving as a protecting group for the preparation of the substrates, being easily removed under the iodocyclization conditions, and suppressing the iodination of the phenolic moiety. This reaction can be performed at room temperature in an open flask using the easy-to-handle iodinating reagent bis(pyridine)iodonium hexafluorophosphate (IPy2PF6).
期刊介绍:
Journal of Organic Chemistry welcomes original contributions of fundamental research in all branches of the theory and practice of organic chemistry. In selecting manuscripts for publication, the editors place emphasis on the quality and novelty of the work, as well as the breadth of interest to the organic chemistry community.