Abstract
It was found that oximes undergo deoximation in the presence of the H2O2aq-HBraq system to form ketones and bromo ketones. This reaction provided the basis for the synthesis of dibromo ketones in yields varying from 40% to 94%. This method is environmentally friendly, sustainable, and easy to perform. The results of this investigation extend the potential of the use of oximes for the protection of carbonyl group, thus offering the ability to perform not only conventional deoximation but also the subsequent bromination of ketones. The reaction is easily scaled up and dibromo ketones can be prepared in gram amounts.
发现在H2O2aq-HBraq系统存在的情况下,肟会发生去氧化反应,生成酮和溴酮。这种反应为二溴酮的合成提供了基础,产率在40%至94%之间变化。这种方法环保、可持续且易于执行。这项研究的结果扩展了肟的用于保护羰基的潜力,因此不仅可以进行常规的去氧化反应,还可以进行酮的溴化反应。这种反应易于扩大规模,可以制备克量的二溴酮。