METHOD OF PRODUCING DI(C-C alkyl)AMINOTRIFLUOROSULFURANES Russian patent published in 2009 - IPC C07C381/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing di(C₁-C₆alkyl)aminotrifluorosulfuranes, which are thermally stable fluorinating agents and are used for substituting hydroxyl or carbonyl groups with fluorine in different organic compounds. The method involves carrying out the process in two steps. At the first step sulphur, bromine and fluoride of alkali metal are reacted in an organic solvent medium, for example acetonitrile, while heating to temperature not exceeding 60°C, preferably at temperature between 50 and 55°C thereby obtaining sulphur tetrafluoride, which is reacted with bis[di(C₁-C₆alkyl)amino]methane in chlorinated hydrocarbon medium at the second stage, while maintaining mixing temperature not exceeding 15°C.

EFFECT: proposed method allows for high output of product and quality using a simple technique, using easily accessible reagents with low energy consumption and low labour input due to elimination of the purification step and extraction of intermediate products.

4 cl, 2 ex