Uses
2,4,6-Trifluorobenzaldehyde is a type of fluorobenzaldehyde. It is an important organic chemical raw material and intermediate, and can be widely used in the synthesis of pesticides, pharmaceuticals, dyes and resins.
Synthesis
2000ml four mouth -bottle into tetrahydrofuran 500g, 1,3,5-trifluorobenzene 132g, cooled to -60 ° C, in -60 ~ -90°C,, dropwise; 2. 5N 500ml Butyl lithium, drop about I.5h, add heat insulation 2h, system drops add 80g N, N-dimethylformamide, and 100 g of a tetrahydrofuran solution, control temperature below -60 °C, Then add heat insulation 3h, and heating insulation, heating up to -30 °C, and set aside. Another 3000ml four-mouth bottle into 650g water, 226g 30 % hydrochloric acid, 190g sodium chloride, stirring, then add dropwise at 20 ° C above-mentioned -temperature reaction solution adding completed, insulation 0 5h, layered, Water layer with 200g methyl tert butyl ether extraction Combined organic layer, steaming solvent 2,4,6-Trifluorobenzaldehyde 145 g.
