2-cyclopentyl-2-methyl-5-mercapto-6,7-dichloro-1-indanol 、
potassium carbonate 、
溴乙酸乙酯 、 、
sodium hydroxide 在
(1-hydroxy-2-cyclopentyl-2-methyl-6,7-dichloro-5-indanylthio)acetic acid 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以there is obtained (1-hydroxy-2-cyclopentyl-2-methyl-6,7-dichloro-5-indanylthio)acetic acid的产率得到(1-hydroxy-2-cyclopentyl-2-methyl-6,7-dichloro-5-indanylthio)acetic acid