Thionyl Chloride → 5-(2-Chloro-4-(trifluoromethyl)phenoxy)-2-nitrobenzoyl chloride

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Reaction Steps

0.3 Part of 2-nitro-5-(2-chloro-4-trifluoromethylphenoxy)benzoic acid and 0.83 part of thionyl chloride for 2 hours. After the reaction, the excess of thionyl chloride was removed under reduced pressure to give 0.31 part of 2-nitro-5-(2-chloro-4-trifluoromethylphenoxy)benzoyl chloride. The resulting benzoyl chloride was added dropwise to a mixture of 0.14 part of diethylaminomethyl phosphonate, 0.095 part of triethylamine and 6 parts by volume of benzene with ice cooling. After the addition, the mixture was stirred at room temperature for 4 hours, and water was added. The mixture was then extracted with benzene, and the extract was washed with a saturated aqueous solution of sodium hydrogen carbonate and water, and dried over anhydrous sodium sulfate. The solvent was removed under reduced pressure to give 0.3 part of the desired compound (100). The IR and NMR spectral data of the compound are shown in Table 1.

Provenance & Evidence