名称:4-(三氟甲基)-1-环己烯-1-硼酸频哪醇酯

英文名称:4-trifluoromethylcyclohex-1-enyl-1-boronic acid pinacol ester

分子式:c13h20bf3o2

分子量: 276.1
cas no.:683242-93-5
结构式:image.png

规格:95%

用途:基础原料、有机中间体、医药中间体

合成路线如下:

potassium acetate; 1,4-dioxane; (1,1'-bis(diphenylphosphino)ferrocene)palladium(ii) dichloride; 1,1'-bis(diphenylphosphino)ferrocene

reactants can be synthesized in 1 step.
wang, hui-ling, us2005/182067, a1, (2005) (b) 4,4,5,5-tetramethyl-2-(4-trifluoromethyl-cyclohex-1-enyl)-[1,3,2]dioxaborolane. to a solution of trifluoro-methanesulfonic acid 4-trifluoromethyl-cyclohex-1-enyl ester, example 1(a), (6.1 g, 20.5 mmol) in dioxane (100 ml) was added bis(pinacolato)diboron (5.6 g, 22 mmol, aldrich), potassium acetate (5.9 g, 60 mmol), pdcl2(dppf) (315 mg, 0.6 mmol, strem) and dppf (332 mg, 0.6 mmol, strem) under nitrogen atmosphere. the reaction mixture was heated at 80°c. with stirring for 18 h, cooled to ro om temperature, and filtered through celite.(r).. the filtrate was evaporated in vacuo and the resid ue was purified by silica gel column chromatography (10percent ethyl acetate/hexane) to give the title compound as a white amorphous solid. ms (esi, pos. ion.) m/z: 277 (m 1).


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