在这里,我们报道了一种新的一锅法,用于从羧酸开始的SO 2 F 2介导的亲核酰基取代反应。机理研究表明,SO 2 F 2介导的酸活化是通过酸酐进行的,然后将其转化为相应的酰基氟。四丁基氯化铵或溴化物可加速酰基氟的形成。优化的卤化物加速条件可用于以30-80%的产率合成酰氟,而酯,酰胺和硫代酯的产率为72-96%,而无需对每个亲核试剂进行重新优化。
Synthesis of Acyl Fluorides from Carboxylic Acids with KI/AgSCF
<sub>3</sub>
for Efficient Amide and Peptide Synthesis
作者:Shuji Nagano、Keiji Maruoka
DOI:10.1002/adsc.202201103
日期:2023.2.7
A facile synthesis of acyl fluorides from carboxylic acids in a practical and byproduct-free manner was effected with commercially available KI/AgSCF3 reagents under conditions of high functional group tolerance, and the acyl fluoride intermediates were easily transformed to the corresponding esters, amides, and several carbon-carbon bond-forming products. This approach can be successfully applied