反应详情

温度

115 °C

1 mL of dimethyl sulfoxide, 0.073 g (1.25 mmol) of sodium chloride, and 0.061 g (1.00 mmol) of acetic acid were added to 0.232 g (1.00 mmol) of a mixture of the compound of the formula 8a and the compound of the formula 8b, and the mixture was heated and stirred at 110 to 120° C. for 5 hours. After allowing it to cool, analysis was carried out using a high-performance liquid chromatography, and it was found that 0.146 g (the value quantitatively determined by high performance liquid chromatography) of a mixture of the compound of the formula 9a and the compound of the formula 9b was obtained.

1. temperatureto cool