Thiocarbonyl compounds Thiocyanates

Interception of reactive intermediates provides access to an even broader range of products. For example, insertion of CO leads to conjugated lactones and thioe-sters (Scheme 4). A wide variety of sulfur derivatives can be used in these processes producing an array of interesting synthetic intermediates. These organosulfur compounds can be free thiol [164, 167-170, 175, 190, 193, 197, 202, 204], disulfide [160, 165, 183, 207], thiocyanate [179, 182, 186], thioborate [161], thiostannane [196], sulfenamide [180], and thioester [187, 189, 191, 194, 195]. Palladium catalyzed thiocarbonylation, and the development of multicomponent reactions centering on hydrothiolation with free thiols and disulfides has been reviewed extensively [19, 20, 23-26, 167, 227-231]. 

C Fj-NFa), trifluoromethyliminosulphur diiluoride [- - CFj-NFa, (CFa)2NF], pentafluoroethyliminosulphur difluoride CaFs NFa), cyanuric fluoride CFs-NF, (CFa)jNF], thiocyanuric acid [-< CFj-NFj, (CF8)aNF], melamine [- CF3 NF2, (CFs)aNF, CFa(NFa)a], methyl thiocyanate (-> CFa NFj), and methyl isothiocyanate CFs-NFa) carbon tetra-fluoride and nitrogen trifluoride were the major products from these fluorina-tions, and a study has been made of the production of the latter via electrochemical fluorination of urea and related compounds. Details of the production of AtALdifiuorotrifluoromethylamine via injection of carbon tetrafluoride into a nitrogen plasma at 1500—6000 K and direct fluorination of potassium cyanide" have appeared in the patent literature preparation of this difluoroamine by u.v. irradiation of a mbcture of hexafluoro-acetone and tetrafluorohydrazine has also been described, and the new compounds CFCla-NFa, CClj-NFg, and ClS-CCIj-NF, have been obtained by photolysis of the hydrazine in the presence of thiocarbonyl chloride. ... 

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