10.1021/jo00252a017
The research focuses on the synthesis and catalytic activity of 2-iodoso- and 2-iodoxybenzoic acids, which contain various substituents such as alkyl, alkyloxy, nitro, carboxyl, and water-solubilizing groups. The purpose of this study was to determine the influence of these substituents on the rates of hydrolysis of active phosphorus esters, including p-nitrophenyl diphenyl phosphate (PNPDPP), p-nitrophenyl isopropylphenylphosphinate (NPIPP), and p-nitrophenyl hexanoate (PNPH), in the presence of cetyltrimethylammonium chloride (CTAC). The research concluded that all synthesized compounds act as true catalysts, with their catalytic activity increasing with higher catalyst concentrations. Notably, 2-iodoxybenzoic acids showed 60-110% of the activity of their 2-iodosobenzoic acid analogues in 0.001 M CTAC. The study found that lipophilic substituents significantly enhanced the catalytic rates, while electron-releasing, -withdrawing, and water-soluble groups had moderate effects. The research also identified that 5-(2-hydroxyethoxy)-2-iodoxybenzoic acid and 5-(alkyloxy)-2-iodosobenzoic and -2-iodoxybenzoic acid derivatives exhibited extraordinary rate enhancements, making these compounds potentially useful as decontaminants for active phosphorus derivatives.