反应详情

4-{4-[5-(3-Iodo-4-methyl-phenylcarbamoyl)-pyridin-2-yl]-piperazin-1-yl}-benzoic acid was prepared by the hydrolysis of 4-{4-[5-(3-iodo-4-methyl-phenylcarbamoyl)-pyridin-2-yl]-piperazin-1-yl}-benzoic acid ethyl ester with LiOH monohydrate in manner similar to the one described in the synthesis of 4-{4-[5-(3-tert-butyl-phenylcarbamoyl)-pyridin-2-yl]-piperazin-1-yl}-benzoic acid, above. The product was isolated after a silica gel column chromatography with a 0-5% MeOH in CH2Cl2 to 0-100% DMF in CH2Cl2 gradient. HRMS m/z calcd for C24H23N4O3I [M+H]+: 543.0888. Found: 543.0886.