FIELD: chemistry.;SUBSTANCE: invention relates to the technology of producing organoboron compounds, particularly a method for regioselective synthesis of monohalogen derivatives of 1,2-, 1,7-, 1,12-dicarba-closo-dodecaboranes(12). The method involves reacting o(m,p)-carboranes with halogenating agents in a medium of an acidic organic solvent, followed by extraction of the end product. The process is carried out in the presence of a catalyst in the form of a strong acid: sulphuric acid (H2SO4), methanesulphonic acid (CH3SO2OH) and trifluoro-methanesulphonic acid (CF3SO2OH) in amount of 0.1-1.0 mol%. The process is carried out at boiling point of the acidic organic solvent for 2-5 hours, wherein the acidic organic solvent used is monobasic liquid organic acids of the aliphatic series R-COOH, where R=H, CnH2n+1, CnF2n+1, n=1-3, with a linear and branched structure. The halogenating agents used are N-haloimides(amides): N-halosuccinimides, 1,3-dihalo-5,5-dimethyl hydantoins, trihaloisocyanuric acids, N-haloarylsulphonamides and sodium salts thereof, N-halophthalimides, where the halogen is Cl, Br, I; aryl is phenyl, p-tolyl.;EFFECT: invention simplifies synthesis of said compounds, increases efficiency of the process and reduces power consumption.;16 ex
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机译:发明领域本发明涉及有机硼化合物的生产技术,特别是用于区域选择性合成1,2-,1,7-,1,12-二氨基甲酰-十二碳烷的单卤素衍生物的方法(12)。该方法包括在酸性有机溶剂的介质中使邻氨基甲酸酯与卤化剂反应,然后萃取最终产物。该方法在强酸形式的催化剂存在下进行:硫酸(H 2 Sub> SO 4 Sub>),甲磺酸(CH 3 Sub> SO 2 Sub> OH)和三氟甲磺酸(CF 3 Sub> SO 2 Sub> OH)的含量为0.1-1.0 mol%。该方法在酸性有机溶剂的沸点下进行2-5小时,其中使用的酸性有机溶剂是脂族R-COOH系列的一元液态有机酸,其中R = H,C n Sub> H 2n + 1 Sub>,C n Sub> F 2n + 1 Sub>,n = 1-3,具有线性和分支结构。所使用的卤化剂是N-卤代酰亚胺(酰胺):N-卤代琥珀酰亚胺,1,3-二卤代5,5-二甲基乙内酰脲,三卤代异氰尿酸,N-卤代芳基磺酰胺及其钠盐,N-卤代邻苯二甲酰亚胺,其中卤素为Cl, br我芳基是苯基,对甲苯基。效果:本发明简化了所述化合物的合成,提高了工艺效率并降低了功耗。
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