{"title":"二氟乙酰丙酮溴化物与 3-EWG-Chromones 的 [3+2] 环加成反应合成二氟甲基色并[3,2-c]吡唑/吡唑","authors":"Ke‐Hu Wang, Xiuwen Liang, Wenjing Luo, Maizhuo Chen, Junjiao Wang, Danfeng Huang, Yulai Hu","doi":"10.1055/a-2368-8392","DOIUrl":null,"url":null,"abstract":"A highly convenient and straightforward strategy for the synthesis of difluoromethyl substituted tricyclic fused chromono[3,2-c]pyrazolines/pyrazoles is developed via [3+2]-cycloaddition of difluoroacetohydrazonoyl bromides with 3-electron-withdrawing-group substituted chromones. The reaction has the advantages of mild conditions, good tolerance of functional groups and simple operation.","PeriodicalId":510101,"journal":{"name":"Synthesis","volume":" 71","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synthesis of Difluoromethyl Chromono[3,2-c]pyrazolines/pyrazoles by [3+2] Cycloaddition Reaction of Difluoroacetohydrazonoyl Bromides with 3-EWG-Chromones\",\"authors\":\"Ke‐Hu Wang, Xiuwen Liang, Wenjing Luo, Maizhuo Chen, Junjiao Wang, Danfeng Huang, Yulai Hu\",\"doi\":\"10.1055/a-2368-8392\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A highly convenient and straightforward strategy for the synthesis of difluoromethyl substituted tricyclic fused chromono[3,2-c]pyrazolines/pyrazoles is developed via [3+2]-cycloaddition of difluoroacetohydrazonoyl bromides with 3-electron-withdrawing-group substituted chromones. The reaction has the advantages of mild conditions, good tolerance of functional groups and simple operation.\",\"PeriodicalId\":510101,\"journal\":{\"name\":\"Synthesis\",\"volume\":\" 71\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-07-18\",\"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-2368-8392\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Synthesis","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1055/a-2368-8392","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Synthesis of Difluoromethyl Chromono[3,2-c]pyrazolines/pyrazoles by [3+2] Cycloaddition Reaction of Difluoroacetohydrazonoyl Bromides with 3-EWG-Chromones
A highly convenient and straightforward strategy for the synthesis of difluoromethyl substituted tricyclic fused chromono[3,2-c]pyrazolines/pyrazoles is developed via [3+2]-cycloaddition of difluoroacetohydrazonoyl bromides with 3-electron-withdrawing-group substituted chromones. The reaction has the advantages of mild conditions, good tolerance of functional groups and simple operation.
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