反应详情

150 mg of methyl cis-4-{4-[5-(3-chlorophenyl)[1.3.4]thiadiazol-2-ylcarbamoyl]phenoxy}-cyclohexanecarboxylate (0.32 mmol, 1 eq.) is placed in 1 mL of tetrahydrofuran. 27 mg of lithium hydroxide monohydrate (0.64 mmol, 2 eq.) dissolved in 1 mL are added and stirring is continued for 18 hours. The reaction medium is diluted with water, washed with ethyl acetate and acidified with aqueous 6% sulfur dioxide solution. The solid obtained is filtered off by suction and washed successively with water, ethanol and diethyl ether. 96 mg of cis-4-{4-[5-(3-chlorophenyl)[1.3.4]thiadiazol-2-ylcarbamoyl]-phenoxy}cyclohexanecarboxylic acid are obtained.

1. additionare added
2. washwashed with ethyl acetate
3. customThe solid obtained
4. filtrationis filtered off by suction
5. washwashed successively with water, ethanol and diethyl ether