为什么要打灌木丛?基于11 CO 2与 1,8-二氮杂双环 [5.4.0] 十一碳烯 (DBU)直接固定的操作简单且温和的反应已被开发用于在 75 °C 下合成11 C 标记的氨基甲酸酯10 分钟内,放射化学产率超过 70%(参见方案)。该策略对于构建用于正电子发射断层扫描和其他应用的新型放射性示踪剂应立即有用。
Interrupted aza-Wittig reactions using iminophosphoranes to synthesize <sup>11</sup>C–carbonyls
作者:Uzair S. Ismailani、Maxime Munch、Braeden A. Mair、Benjamin H. Rotstein
DOI:10.1039/d1cc01016f
日期:——
A direct CO2-fixation methodology couples structurally diverse iminophosphoranes with various nucleophiles to synthesize ureas, carbamates, thiocarbamates, and amides, and is amenable for 11C radiolabeling. This methodology is practical, as demonstrated by the synthesis of >35 products and isolation of the molecular imaging radiopharmaceuticals [11C]URB694 and [11C]glibenclamide.