<sup>11</sup>
C-Carbonylation through in Situ Generated <sup>11</sup>
C-Benzoyl Chlorides with Tetrabutylammonium Chloride as Chloride Source
作者:Kenneth Dahl、Patrik Nordeman
DOI:10.1002/ejoc.201700268
日期:2017.5.10
esters, and aldehydes were obtained through a novel 11C-carbonylative reaction. In the two-step process, aryl iodides are first reacted with 11CO and tetrabutylammonium chloride in a palladium-mediated reaction to yield 11C-benzoyl chlorides in situ. The crude mixture is then further treated with either a hydroxide, amine, alcohol, or a hydride in a second vial to furnish the final 11C-carbonyl product
含芳香族 11C 的酸、酰胺、酯和醛是通过新的 11C-羰基化反应获得的。在两步法中,芳基碘化物首先在钯介导的反应中与 11CO 和四丁基氯化铵反应,原位生成 11C-苯甲酰氯。然后在第二个小瓶中用氢氧化物、胺、醇或氢化物进一步处理粗混合物以提供最终的11C-羰基产物。单齿配体三叔丁基四氟硼酸鏻被证明是获得高放射化学产率 (RCY) 的关键。广泛的含 11C 羰基化合物在中等至优异的 RCY 中成功进行放射性标记,范围为 41-93%。合成的视黄酸他米巴罗汀以 89% 的 RCY 获得,而 Boc 保护的普鲁卡因酰胺以 68% 的 RCY 标记,