Bandera Y. The synthesis and chemical properties of polyfluoroalkyl-2-thioxo-3-oxosulfones

The thesis is devoted to study of 1-aryl(alkyl)sulfonyl-1-thioxo-polyfluoroalkan-2-ones and various olefins interaction and to investigation of some chemical properties of products obtained. The study resulted in the elaboration of efficient preparative method for new fluoro containing heterocyclic compounds of dihydrothiine and dihydro-1,4-oxathiine series, based on cycloaddition reactions. It was established that 1-aryl(alkyl)sulfonyl-1-thioxo-polyfluoroalkan-2-ones act as heterodienophiles in [2+4]-cycloaddition reactions toward 1,3-dienes exclusively on C=S bond. It was found that l-aryl(alkyl)sulfonyl-l-thioxo-polyfluoroalkan-2-ones react in the same manner as 1,3-heterodienes with electron-enriched olefins(styrene, ethylvinyl ethers) with formation of [4+2]-cycloaddition products.