14C-Anthranilic acid has been prepared in a fast and efficient way in a two-step reaction in 82% overall radiochemical yield. Thus, 2-iodoaniline was transformed into 2-amino-[7-14C]-benzonitrile using a palladium catalyzed cyanation with zinc 14C-cyanide. Subsequent basic hydrolysis of the cyano group afforded [7-14C]-anthranilic acid. The method was successfully applied to a benzophenone scaffold, 4-iodophenol and 4-iodobenzoic acid producing the corresponding carboxylic acids in good to excellent radiochemical yields (62–82%) and with high specific activity (1.94–1.98 GBq/mmol). Copyright © 2009 John Wiley & Sons, Ltd.
14C-Anthranilic acid 是通过两步反应快速高效地制备出来的,总放射
化学收率为 82%。这样,
2-碘苯胺在
钯催化下与 14C
氰化锌发生
氰化反应,转化为 2-
氨基-[7-14C]-苯腈。随后
氰基发生碱性
水解,得到[7-14C]-anthranilic acid。该方法成功地应用于
二苯甲酮支架、
4-碘苯酚和
4-碘苯甲酸,产生了相应的
羧酸,放射性
化学收率良好至极佳(62-82%),比活度高(1.94-1.98 GBq/mmol)。Copyright © 2009 John Wiley & Sons, Ltd. All Rights Reserved.