M. T. Omar, A. A. El-Khamry, A. Youssef, S. K. Ramadan
{"title":"Novel synthesis of thieno[2,3-d] and 1,2-dithiino[4,5-c] Thiazoles","authors":"M. T. Omar, A. A. El-Khamry, A. Youssef, S. K. Ramadan","doi":"10.1080/02786110213979","DOIUrl":null,"url":null,"abstract":"Thionation of 3-substituted-5-(2-aryl-2-oxoethyl)-2-thioxo-4-oxo-1,3-thiazolidines 1a-e either with tetraphosphorous decasulfide or with Lawesson's reagent in xylene affords the respective 3-substituted-5-aryl-2,3-dihydro [2,3-d] 1,3-thiazole-2-thiones 2a-e . However, thionation of 1f affords 3-(3-methylphenyl)-6-(4-ethylphenyl)-2-thio-2,3-dihydrothiazolo[4,5-c]1,2-dithin 3 . The structure of the synthesized compounds were supported by microanalytical and spectral evidence. A rationalization for the route of conversion was also given.","PeriodicalId":22122,"journal":{"name":"Sulfur Letters","volume":"34 1","pages":"173 - 181"},"PeriodicalIF":0.0000,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sulfur Letters","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/02786110213979","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
Thionation of 3-substituted-5-(2-aryl-2-oxoethyl)-2-thioxo-4-oxo-1,3-thiazolidines 1a-e either with tetraphosphorous decasulfide or with Lawesson's reagent in xylene affords the respective 3-substituted-5-aryl-2,3-dihydro [2,3-d] 1,3-thiazole-2-thiones 2a-e . However, thionation of 1f affords 3-(3-methylphenyl)-6-(4-ethylphenyl)-2-thio-2,3-dihydrothiazolo[4,5-c]1,2-dithin 3 . The structure of the synthesized compounds were supported by microanalytical and spectral evidence. A rationalization for the route of conversion was also given.
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