Acid-Mediated Imidazole-to-Fluorine Exchange for the Synthesis of Sulfonyl and Sulfonimidoyl Fluorides
作者:Marco T. Passia、Joachim Demaerel、Mostafa M. Amer、Alwin Drichel、Stefanie Zimmer、Carsten Bolm
DOI:10.1021/acs.orglett.2c03546
日期:2022.12.9
Sulfur(VI) fluoride motifs are important entities in organic chemistry. Typically, their syntheses involve the corresponding chlorides, which are often difficult to prepare and characterized by a poor storability due to the inherently weak S–Cl bond. Here, a single-step procedure for the preparation of sulfur(VI) fluorides starting from sulfonyl imidazoles as stable S(VI) reservoirs is described. By
硫 (VI) 氟化物基序是有机化学中的重要实体。通常,它们的合成涉及相应的氯化物,这些氯化物通常难以制备,并且由于固有的弱 S-Cl 键而具有较差的储存性。在这里,描述了从磺酰咪唑作为稳定的 S(VI)储层开始制备硫(VI)氟化物的单步程序。通过使用 AcOH 和氟化氢钾 (KF 2 H) 的简单组合,咪唑到氟的交换可提供各种磺酰基、亚磺酰亚胺酰基、亚磺酰基和氨磺酰氟,产率从高到高。