[MeCAACH][F(HF)] + [MeCAACH][F(HF)] did not confirm the low thermodynamic stability of 2. Furthermore, the use of 3 as a nucleophilic fluorinating reagent was tested on a range of organic substrates, as it is the most stable compound in this series. It was found to have the potential to fluorinate benzyl bromides, 1- and 2-alkyl bromides, silanes and sulfonyls with good to excellent yields of the target fluorides
将无
水HF添加到盐酸盐[ Me
CAACH][Cl(HCl) 0.5 ]中导致形成具有高HF含量的盐。通过在真空中逐步去除HF ,我们选择性地制备了[ Me
CAACH][F(HF) 2 ]( 3 )和[ Me
CAACH][F(HF) 3 ]( 4 )。我们还对 [ Me
CAACH][F(HF) 3.5 ] ( 5 )结构中带有 [F(HF) 4 ] -阴离子的盐进行了表征。HF 含量较低的化合物在真空条件下无法获得。我
CAAC(H)F ( 1) 是通过用 CsF 或 KF 从3中提取 HF 选择性制备的,而 [ Me
CAACH][F(HF)] ( 2 ) 是通过将3和1以 1:1 的比例混合来制备的。化合物2被证明非常不稳定,因为它容易歧化成1和3。这一观察结果引发了我们的计算研究,其中使用不同的 DFT 方法研究了基于
CAAC 的
氟吡咯烷和
氟化二氢
吡咯之间的结构关系。研究表明,