The present work reports a simple and efficient method for the sulfenylation of a wide variety of indoles with aryl, benzothiazolethiols using manganese(III) acetate promoted free radical reaction. This method is selective at the C3 position of indoles and offers several advantages such as broad substrate scope, functional group tolerance (bromo, carboxylic acid, methoxy, difluoromethoxy, ester groups) and gives the required products in good to excellent yields. The experimental simplicity makes it a useful and attractive approach for the synthesis of 3-aryl sulfenyl indoles. The compounds 1-12 are evaluated for the anti-bacterial agents. Most of them exhibited promising activities.
本研究报告了一种简单高效的方法,用于多种
吲哚与芳基和苯
噻唑硫醇的
硫烯化,通过过渡
金属
锰(III)
醋酸盐促进的自由基反应。该方法选择性针对
吲哚的C3位置,具有广泛的底物范围和对官能团的容忍性(如
溴、
羧酸、甲氧基、二
氟甲氧基、酯基),并能以良好到优异的产率获得所需产品。其实验简便性使其成为合成3-芳基
硫烯
吲哚的一种有用且有吸引力的方法。化合物1-12被评估为抗菌剂,其中大多数表现出良好的活性。