Metal-Free Activation of C(sp<sup>3</sup>
)-H Bond, and a Practical and Rapid Synthesis of Privileged 1-Substituted 1,2,3,4-Tetrahydroisoquinolines
作者:Santosh Kumar Choudhury、Pragati Rout、Bibhuti Bhusan Parida、Jean-Claude Florent、Ludger Johannes、Ganngam Phaomei、Emmanuel Bertounesque、Laxmidhar Rout
DOI:10.1002/ejoc.201700471
日期:2017.9.25
reaction of cotarnine and acyl/aryl ketones in green solvents provides an efficient approach to an array of privileged 1,2,3,4-tetrahydroisoquinolines in excellent yields by metal free Activaion of C(SP3)-H bonds. This one-pot procedure takes place under base-free conditions at room temperature, and tolerates a wide range of functionalities. The reaction is highly chemo-selective, scalable in multi-gram
Cotarnine 和酰基/芳基酮在绿色溶剂中的反应提供了一种有效的方法,通过 C(SP3)-H 键的无金属激活,以优异的收率获得一系列特权 1,2,3,4-四氢异喹啉。这种一锅程序在室温下无碱条件下进行,并具有广泛的功能。该反应具有高度化学选择性,可在多克规模上进行扩展,并且通过简单过滤分离出纯产物,无需后处理。有趣的是,从可塔宁卤化物盐的补充两步程序以良好的收率提供了曼尼希产品。范围详细说明了 9-溴可豆碱盐,以获取 9-溴香豆素启发的多种类似物。