Utilization of potassium carbonate for the synthesis of 2-(organylsulfonyl)thieno[2,3-b]pyridine derivatives
作者:V. E. Kalugin、A. M. Shestopalov
DOI:10.1007/s11172-019-2393-7
日期:2019.2
preparative method for the synthesis of 2-(organylsulfonyl)thieno[2,3-b]pyridine derivatives has been developed, which allows one to obtain the desired products in a good yield and to shorten the reaction duration. The reaction of 3-cyanopyridine-2(1H)-thiones with chloromethyl organyl sulfones in the presence of potassium carbonate as the base gave 2-(organylsulfonyl) thieno[2,3-b]pyridine-3-amines. The
已经开发了一种用于合成 2-(有机磺酰基) 噻吩并 [2,3-b] 吡啶衍生物的新制备方法,可以以良好的收率获得所需的产物并缩短反应持续时间。在作为碱的碳酸钾存在下,3-氰基吡啶-2(1H)-硫酮与氯甲基有机基砜的反应得到2-(有机基磺酰基)噻吩并[2,3-b]吡啶-3-胺。4,6-二甲基吡啶-2(1H)-硫酮-3-羧酸甲酯与氯甲基有机砜的相同反应产生4,6-二甲基-2-(有机磺酰基)噻吩并[2,3-b]吡啶的互变异构混合物-3-oles 和 4,6-二甲基-2-(organylsulfonyl) thieno[2,3-b]pyridine-3(2H)-ones。