Regiocontrolled N-, O- and C-methylation of 1-phenyl-3-polyfluoroalkyl-1H-pyrazol-5-ols
作者:N.A. Nemytova、E.V. Shchegol’kov、Ya.V. Burgart、P.A. Slepukhin、S.S. Borisevich、S.L. Khursan、V.I. Saloutin
DOI:10.1016/j.jfluchem.2017.12.011
日期:2018.2
The approaches for regiocontrolled N-, O- and C-methylation of 1-phenyl-3-polyfluoroalkyl-1H-pyrazol-5-ols have been developed. The chemoselective N-methylation proved to be an efficient method for the synthesis of polyfluorinated antipyrine analogs. In addition, we reinvestigated the structure of 3-polyfluoroalkyl-1-phenylpyrazol-5-ols by the X-Ray analysis. The quantum-chemical calculations were
已经开发了用于区域控制1-苯基-3-多氟烷基-1 H-吡唑-5-醇的N-,O-和C-甲基化的方法。化学选择性的N-甲基化被证明是合成多氟安替比林类似物的有效方法。另外,我们通过X射线分析重新研究了3-聚氟烷基-1-苯基吡唑-5-醇的结构。量子化学计算用于解释甲基化过程。初步的生物学测试表明,含有三氟甲基的安替比林具有明显的镇痛作用。