Ascorbic Acid/Iodine and Triphenylphosphine/Iodine as Reducing Agents for the As(V)[dbnd]O Group
作者:Theodore D. Sideris、Panayiotis V. Ioannou
DOI:10.1080/10426500500272335
日期:2006.6
The scope of ascorbic acid/iodine and triphenylphosphine/iodine in methanol for the direct reduction of arsenic(V) compounds having the As˭O group has been investigated. Ascorbic acid/iodine reduces arsonic acids, diphenylarsinic acid (but not dimethylarsinic acid), and triphenylarsine oxide. The rates of reduction depend on the electronic effects of the ligands bound to arsenic and on the hydrogen-bonding
已经研究了抗坏血酸/碘和三苯基膦/碘在甲醇中用于直接还原具有 As˭O 基团的砷 (V) 化合物的范围。抗坏血酸/碘可减少胂酸、二苯基胂酸(但不包括二甲基胂酸)和氧化三苯基胂酸。还原速率取决于与砷结合的配体的电子效应以及存在时该物种的氢键强度。当 As(V) 化合物具有 -NH 2 或 -NH 3 + 基团时,还原产物与酮形式的脱氢抗坏血酸反应,得到缩合产物。三苯基膦/碘缓慢地还原两性离子邻氨基苯胂酸,但更快地还原相同酸的盐酸盐。