Sodium Iodide → 2,3,5,6-Tetraiodo-1,4-benzenedicarboxylic acid

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Reaction Steps

21.4 g Di-sodium tetra-iodoterephthalate, 0.5 g sodium iodide, and 10 g 2-chloropropanol were heated with stirring in 150 ml dimethylformamide at 100° C for 10 hours. The solvent was distilled off, and the residue was suspended in water and purified as described in Example 1. 14.15 g Bis-1-hydroxy-2-propyl ester of tetra-iodoterephthalic acid (60% yield) was recovered. It melted and decomposed at about 225° C.

Provenance & Evidence