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179011-37-1

ethyl 2,4-difluoro-5-nitrobenzoate synthesis

3synthesis methods
-

Yield:179011-37-1 95%

Reaction Conditions:

with sulfuric acid;nitric acid at 0;

Steps:

59.d

(d) Ethyl 2,4-difluoro-5-nitrobenzoateCone. HNO3 (8 ml.) was added dropwise to a mixture of ethyl 2,4-difluorobenzoate (10.0 g; 53.7 mmol) in cone. H2SO4 (8 ml.) at 0 0C. After 2 h at 0 0C, the mixture was poured onto ice and extracted with EtOAc. The organic extracts were washed with saturated NaHCO3 solution (aq) and concentrated to give the sub-title compound. Yield: 1 1.8 g (95%).

References:

WO2010/100249,2010,A1 Location in patent:Page/Page column 101; 103