{"title":"1H NMR evidence of C-O, C--N and C-H--Cl hydrogen bonds in new thiazole derivatives","authors":"F. Viesca, M. R. Gómez, Martha I Berros","doi":"10.3987/COM-02-9478","DOIUrl":null,"url":null,"abstract":"A comparative study of the chemical shift differences observed in the 1 H NMR spectra of a series of fifteen new polysubstituted 4-aryl- and 2,4-diaryl thiazoles permitted us to establish two groups of rotamers. Some present paramagnetic shifts due to intramolecular weak hydrogen bonding and this was confirmed by experiments \"at infinite dilution\", single crystal X-Ray studies, NOESY and HMBC experiments.","PeriodicalId":21276,"journal":{"name":"Revista Latinoamericana de Química","volume":"57 1","pages":"72-78"},"PeriodicalIF":0.0000,"publicationDate":"2002-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"13","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Revista Latinoamericana de Química","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3987/COM-02-9478","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 13
Abstract
A comparative study of the chemical shift differences observed in the 1 H NMR spectra of a series of fifteen new polysubstituted 4-aryl- and 2,4-diaryl thiazoles permitted us to establish two groups of rotamers. Some present paramagnetic shifts due to intramolecular weak hydrogen bonding and this was confirmed by experiments "at infinite dilution", single crystal X-Ray studies, NOESY and HMBC experiments.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
