<i>N</i>-Sulfonylcarboxamide as an Oxidizing Directing Group for Ruthenium-Catalyzed C-H Activation/Annulation
作者:Elina Petrova、Dace Rasina、Aigars Jirgensons
DOI:10.1002/ejoc.201601582
日期:2017.4.3
N-Sulfonylcarboxamides can act as both a directing group for C–H activation and an internal oxidant in the Ru-catalyzed annulation reaction with alkynes to give isoquinolones. Of all of the N-sulfonylcarboxamides that were studied, the N-(2,6-difluorophenyl)sulfonamide derivatives were found to be the most efficient and led to the formation of an unstable sulfinate byproduct that decomposed into 1
N-磺酰基甲酰胺既可以作为 C-H 活化的导向基团,也可以作为 Ru 催化的炔烃环化反应中的内部氧化剂,以产生异喹诺酮。在研究的所有 N-磺酰甲酰胺中,发现 N-(2,6-二氟苯基)磺酰胺衍生物最有效,并导致形成不稳定的亚磺酸盐副产物,在反应条件。所描述的异喹诺酮合成为目前已知的异羟肟酸和亚砜亚胺衍生物的无痕环化提供了替代方案。