Our report describes the facile and scalable preparation of 9H-thioxanthen-9-one 10,10-dioxides via Pd-catalyzed sulfonylative homocoupling of the appropriately substituted benzophenones. This transformation provides a straightforward route to previously unreported sulfone-fluoresceins and -fluorones. Several examples of these red fluorescent dyes have been prepared, characterized, and evaluated as
我们的报告描述了通过适当取代的
二苯甲酮的 Pd 催化磺酰化自偶联来轻松且可规模化地制备 9 H-
噻吨-9-酮 10,10-二
氧化物。这种转化为以前未报道的砜
荧光素和荧光
酮提供了一条直接的途径。这些红色荧光
染料的几个例子已经被制备、表征和评估为与具有 775 nm 受激发射损耗的超分辨率荧光显微镜兼容的活细胞渗透标记。