Synthesis, spectral characterization and bioassay of 3,3′-(1,4-phenylene)-bis[2-alkoxycarbonyl-alkyl)-2-thio-benzoxa-phosphinines]
作者:M. Veera Narayana Reddy、A. Bala krishna、C. Suresh Reddy
DOI:10.1016/j.ejmech.2010.01.019
日期:2010.5
Synthesis of 3,3′-(1,4-phenylene)-bis[2-alkoxycarbonyl-alkyl)-2-thio-benzoxaphos-phinines] (3a–j) were accomplished via two step process. It involves the prior preparation of monochloride intermediate (2) and its subsequent reaction with the amino acid esters in dry tetrahydrofuran-toluene in the presence of triethylamine at reflux temperature. These compounds were characterized by IR, 1H, 13C, 31P
3,3'-(1,4-亚苯基)-双[2-烷氧基羰基-烷基)-2-硫代-苯并氧杂膦](3a – j)的合成是通过两步过程完成的。它涉及先制备一氯化物中间体(2),然后使其与氨基酸酯在干燥的四氢呋喃-甲苯中,在三乙胺存在下,在回流温度下反应。这些化合物的特征在于IR,1 H,13 C,31 P NMR,并显示出有效的体外抗氧化活性。