Related Products of 2106-18-5, These common heterocyclic compound, 2106-18-5, name is 2-(Trifluoromethoxy)fluorobenzene, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
To a 500 mL three-necked flask, concentrated sulfuric acid (20 mL, 0.35 mol, 3.5 eq)The raw material o-fluorotrifluoromethoxybenzene (18 g, 0.1 mol, 1 eq) was added portionwise with stirring,After stirring for half an hour the solution is clear,Cool to -5 C with ice-salt bath,Concentrated nitric acid (6.6 mL, 0.1 mol, 1 eq) was slowly added dropwise,The reaction is exothermic, the dropping rate to maintain the internal temperature does not exceed 0 ,After the addition is completed,After stirring at 0 C for 1 hour,Heated to 40 C and stirred for 12h,After the reaction solution was cooled to room temperature,Slowly poured into crushed ice, and constantly stirring,A large number of yellow solid precipitation, suction filtration,The filter cake was washed three times with water, drained,Dried under vacuum to give a yellow solid 18g, yield 80%, HPLC purity 95%.
The synthetic route of 2106-18-5 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Wuxi Jiehua Pharmaceutical Technology Co., Ltd.; Bao Liang; Gu Shuyin; (7 pag.)CN106986886; (2017); A;,
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