thiophene-1,1-dioxides with strong EWGs has been described to date. Trifluoroperacetic acid in acetonitrile in the absence of water is shown to oxidise thiophenes, including examples possessing an electron-withdrawing group such as sulfonyl or alkoxycarbonyl. An easy and ready for scale-up procedure is developed, some formerly unknown thiophene-1,1-dioxides are obtained.
迄今为止,尚未描述具有强EWG的
噻吩-1,1-二
氧化物的通用合成方法。
乙腈中不存在
水的
三氟过氧乙酸可
氧化
噻吩,包括具有吸电子基团的实例,如磺酰基或烷
氧基羰基。开发了一种容易且可按比例放大的程序,获得了一些以前未知的
噻吩-1,1-二
氧化物。