METHOD OF REGIOSELECTIVE SYNTHESIS OF MONOHALOGEN-DERIVATIVES OF 1,2-,1,7-,1,12-DICARBA-CLOSO-DODECABORANES(12) WITH APPLICATION OF COMPLEX ACTIVATION Russian patent published in 2014 - IPC C07F5/02 

FIELD: chemistry.

SUBSTANCE: invention relates to method of obtaining of monohalogen-derivatives of 1,2-,1,7-,1,12-dicarba-closo-dodecaboranes(12). Method includes interaction of o(m,p)carboranes with halogenating agents; as halogenating agents used are N-halogenimides (amides): N-halogen-succinimides, 1,3-dihalogen-5,5-dimethylhydantoins, trihalo-isocyanuric acids, N-halogenaryl-sulfonamides and their sodium salts, N-halogenphthalimides, where halogen= Cl, Br, I; aryl = phenyl, p-tolyl, in medium of acidic organic solvent. As solvent applied are liquid organic monobasic acids of aliphatic series R-COOH, where R=H, C_nH_2n+1, C_nF_2n+1, n=1-3. the process is carried out with application of ultrasound activation in presence of catalyst, as catalyst used are strong acids: sulfuric (H₂SO₄), methanesulfonic (CH₃SO₂OH) and trifluoromethanesulfonic (CF₃SO₂OH) in amount 0.1-1.0 mol %. The process is carried out at temperature 20-50°C for 2-4 hours.

EFFECT: invention makes it possible to reduce energy consumption.

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