Thioketones and Selenoketones

Synthesis.—A traditional route to particularly non-enethiolizable thiotekones is based on the reaction of the corresponding ketones with phosphorus pentasulphide in boiling aromatic hydrocarbons. Assuming a very polar intermediate in this reaction, Scheeren and his co-workers suggested the advantageous application of more polar solvents such as acetonitrile, THF, and diglyme. Their experiments actually revealed a much 

Daunis, M. Guerret-Rigail, and R. Jacquier, Bull. Soc. chim. France, 1972, 3198. 

With the intention of preparing nitriles from primary thioamides, Fujita and his co-workers allowed several of the latter type of compounds to react with NN -dialkyl phenylpropiolamidines, and they obtained, besides the 

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The most investigated thioketones have found applications in the pharmaceutical, polymer, pesticide, and herbicide industries. However, there is increasing interest in their photophysic and non-linear electric properties, which make them interesting molecules for fluorescence and phosphorescence spectroscopy, and promising building blocks for non-linear optical materials. Studies concerning the addition of a hydrogen atom to C=S, the environment" and the C NMR for thioketones and selenoketones have been also carried out. 

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