2719-27-9

98-89-5

2719-27-9

The general procedure for the synthesis of cyclohexanecarboxylic acid from cyclohexanecarboxylic acid is as follows: 20.0 g (of which 6.95 g, 0.054 mol, of cyclohexanecarboxylic acid) of cyclohexanecarboxylic acid solution was added to 1.0 g of n-dodecane (as an internal standard) to a reactor fitted with a condenser and a Dean-Stark water separator. After adding 90 mL of benzene, about 25 mL of benzene was removed by distillation under nitrogen protection to prepare an anhydrous solution. After the reaction solution was cooled to room temperature, 6.0 mL (9.8 g, 0.082 mol) of thionyl chloride was added and the reaction was refluxed for 1 hour. After completion of the reaction, a portion of the reaction solution was taken and reacted with methanol containing a small amount of triethylamine, which was used to identify the product cyclohexanecarbonyl chloride. The yield of methyl cyclohexanecarboxylate was analyzed by gas chromatography (GC). The results showed that the conversion of cyclohexanecarboxylic acid chloride was more than 99% and the selectivity was higher than 99%.