<i>N</i>-(2-Tetrafluoro(trifluoromethyl)-λ<sup>6</sup>-sulfanyl(CF<sub>3</sub>SF<sub>4</sub>)-ethyl) Amines: The Influence of the CF<sub>3</sub>SF<sub>4</sub> Group on Lipophilicity and p<i>K</i>a
作者:Muqian Deng、Max Wilde、John T. Welch
DOI:10.1021/acs.joc.3c01614
日期:2023.11.17
for the preparation of trans-CF3SF4-substituted amines has been described. Primary and secondaryamines bearing a variety of different functional groups including amino acids, cyclic amines, and nucleosides were prepared. The desired amines were synthesized under mild conditions. The influence of the CF3SF4-group on the pKa and log D of a standard amine was established. The unusual conformation of the
描述了制备反式-CF 3 SF 4取代胺的实用合成路径。制备了带有多种不同官能团(包括氨基酸、环胺和核苷)的伯胺和仲胺。在温和条件下合成所需的胺。确定了CF 3 SF 4基团对标准胺的p Ka和log D的影响。反式-CF 3 SF 4取代的甲苯磺酸盐的不寻常构象已通过其晶体结构得到证实。
Synthesis of N-(2-SF5-ethyl)amines and impact of the SF5 substituent on their basicity and lipophilicity
of N-(2-SF5-ethyl)amines is reported via the SN2 reaction between various amines and 2-(pentafluoro-λ6-sulfanyl)ethyl trifluoromethanesulfonate as the SF5-containing electrophile. A total of 14 examples of SF5-containing aliphatic amines were synthesized, with yields going from 19 to 92%. Moreover, the effect of the SF5 substituent on the basicity and the lipophilicity of the amine was evaluated, and