Design, synthesis, and testing of potential antisickling agents. 4. Structure-activity relationships of benzyloxy and phenoxy acids
作者:D. J. Abraham、P. E. Kennedy、A. S. Mehanna、D. C. Patwa、F. L. Williams
DOI:10.1021/jm00374a006
日期:1984.8
small molecules, benzyloxy and phenoxy acids, as potent inhibitors of hemoglobin S (HbS) gelation. Structural modifications with a large number of each class confirm our earlier work that the highest activity is observed with compounds that contain dihalogenated aromatic rings with attached polar side chains. We have also found a halogenated aromatic malonic acid derivative to be quite active. Compounds
An efficient approach to the synthesis of 2,3,4,5-tetrafluorophenol
作者:E. V. Tretyakov、A. M. Maksimov、P. V. Nikul’shin、T. V. Mezhenkova
DOI:10.1007/s11172-021-3178-3
日期:2021.5
3,4,5-tetrafluorophenyl)-thio]acetic acid. The resulting salt was converted into methyl ester and desulfurized with Raney nickel to 2,3,4,5-tetrafluorophenol. The proposed method is a simple and efficient way to obtain poorly available 2,3,4,5-tetrafluorophenol in ∼58% total yield based on 2-[(2,3,4,5,6-pentafluorophenyl)thio]acetic acid.
提出了一种从 2-[(2,3,4,5,6-五氟苯基)硫代]乙酸制备 2,3,4,5-四氟苯酚的新方法。它包括在 K 2 CO 3存在下该酸的盐的分子内环化,并用邻位取代氟原子和内酯的形成,在反应条件下进行开环形成2-[6-羟基(2,3,4,5-四氟苯基)-硫代]乙酸钾盐。将所得盐转化为甲酯并用雷尼镍脱硫为2,3,4,5-四氟苯酚。所提出的方法是一种简单有效的方法,以 2-[(2,3,4,5,6-五氟苯基)硫代]乙酸为基础,以约 58% 的总收率获得可用性较差的 2,3,4,5-四氟苯酚.