Mechanosynthesis of phosphonocinnamic esters through solvent-free Horner-Wadsworth-Emmons reaction
作者:María Adelina Jiménez-Arellanes、Miguel Ángel Peña-Rico、Karla Viridiana Castro-Cerritos、Luis Daniel Sifuentes-Vázquez、Miguel Angel Reyes-González、Oscar Abelardo Ramírez-Marroquín
DOI:10.1080/10426507.2022.2053976
日期:2022.10.3
yields (13–99%), from tetraethyl methylenediphosphonate, an aromatic or aliphatic aldehyde and potassium tert-butoxide, using 5 min of mortar and pestle grinding. Potassium tert-butoxide acts as a base and liquid-assisting grinding agent. All isolated products were fully characterized as (E)-isomers through NMR spectroscopy. Furthermore, among the synthesized compounds diethyl (E)-2-(4-methoxyphenyl)vinylphosphonate
摘要 在这里,我们报告了通过无溶剂机械活化的 Horner-Wadsworth-Emmons (HWE) 烯化,从亚甲基二膦酸四乙酯(一种芳香族或脂肪族醛)以常规至优异的产率(13-99%)温和合成 15 种膦酸肉桂酸酯和叔丁醇钾,用研钵和杵研磨 5 分钟。叔丁醇钾用作碱和助液研磨剂。所有分离的产物都通过 NMR 光谱完全表征为 ( E )-异构体。此外,在合成的化合物中,发现 ( E )-2-(4-甲氧基苯基)乙烯基膦酸二乙酯1是一种有趣的细胞毒剂,可抑制两种乳腺癌细胞系的生长 (MDA-MB-453, IC 50= 79 µg/mL 和 MCF-7 IC 50 = 64 µg/mL)。据我们所知,这是首次报道机械活化 HWE 反应用于合成 α、β-不饱和膦酸盐,并且其中一些首次被评估为对乳腺癌细胞系的细胞毒剂。总之,( E )-膦酸肉桂酸酯的快速且操作简单的合成提供了新的有前途的细胞毒