Effects of added salts on the rate of alkaline rearrangement of phenylglyoxal to mandelic acid were examined in aqueous solution at 30 °C. The reaction showed positive salt effects. Specific acceleration was found with some metal ions, the efficiency decreasing in the order Ca2+>Tl+>Sr2+>Ba2+.
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Okuyama et al. (1982) studied this question.
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