Palladium-Catalyzed Cross-Coupling of Cyanohydrins with Aryl Bromides: Construction of Biaryl Ketones
作者:Huifang Dai、P. Andrew Evans、Jadab Majhi、Bohang Zhou、Yuxin Zhuang、Mai-Jan Tom
DOI:10.1055/a-1850-3687
日期:——
The palladium-catalyzed cross-coupling of the lithium anion of aryl tert-butyldimethylsilyl-protected cyanohydrins with aryl bromides followed by in situ deprotection with fluoride ion provides a convenient and versatile approach to biaryl ketones. This protocol represents the first example of a palladium-catalyzed arylation of a cyanohydrin, which functions as an acyl anion equivalent. Hence, in contrast
钯催化的芳基叔丁基二甲基甲硅烷基保护的氰醇的锂阴离子与芳基溴化物的交叉偶联,然后用氟离子原位脱保护为联芳基酮提供了一种方便且通用的方法。该协议代表了氰醇的钯催化芳基化的第一个例子,其作为酰基阴离子等价物起作用。因此,与经典的交叉偶联反应相比,前亲核试剂组分被掺入产物中以允许进一步的功能化。然后,我们强调了新方法在生物活性联芳基酮中的应用以及构建用于制备扩展四硫富瓦烯的三芳基二酮的合成效用。