α-Fluoroenamides, potent rigid fluorinated bioisosters of ureas, have been synthesized by a highly regio- and stereo-selective hydrofluorination of ynamides in anhydrous HF. This reaction provides the first general entry to α-fluoroenamides and can easily be applied to a wide range of substrates.
(Radio)fluoroclick Reaction Enabled by a Hydrogen-Bonding Cluster
作者:Xiaojun Zeng、Junling Li、Chin K. Ng、Gerald B. Hammond、Bo Xu
DOI:10.1002/anie.201711341
日期:2018.3.5
We have developed a widely applicable nucleophilic (radio)fluoroclick reaction of ynamides with readily available and easy‐to‐handle KF(18F). The reactions exhibited high functional‐group tolerance and needed only an ambient atmosphere. This 18F addition to C−C unsaturated bonds proceeded with extraordinarily high radiochemical yields.
我们开发了一种广泛适用的 ynamides 与易于获得且易于处理的 KF( 18 F) 的亲核(放射性)氟点击反应。该反应表现出高官能团耐受性,并且仅需要环境气氛。这种18 F 加成到 CC 不饱和键上的过程具有极高的放射化学产率。