Sodium Carbonate → 2,4,6-Trichloropyrimidine-5-carboxylic acid

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Reaction Steps

A solution of 12.35 parts of trichloropyrimidine-5-carbonyl chloride in 200 parts by volume of acetone is stirred into a suspension of 12.12 parts of γ-(β-sulfatoethylsulfonyl)-propylamine in 250 parts by volume of acetone at 0° C. The reaction is carried out at 5° to 10° C., while maintaining a pH of 6.5 by means of 15% strength aqueous sodium carbonate solution. The trichloro-pyrimidine-5-carboxylic acid compound thus obtained of the formula ##STR25## is isolated by evaporation of the solution under reduced pressure. The compound is a solid substance; it is characterized by the following 13C-NMR spectroscopy values in hexadeutero-dimethyl sulfoxide: δ (in ppm)=21.7; 37.9; 51.2; 52.3; 60.0; 129.4; 157.5; 159.4; 160.6 compared with tetramethylsilane as the internal standard.

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