Hydrogen-Transfer-Mediated Direct β-Alkylation of Aryl-1,8-naphthyridines with Alcohols under Transition Metal Catalyst Free Conditions
作者:Biao Xiong、Shudi Zhang、Huanfeng Jiang、Min Zhang
DOI:10.1021/acs.orglett.5b03699
日期:2016.2.19
abundant and sustainable alcohols as the alkylating reagents, a new and direct alkylation method has been demonstrated. This method enables the selective alkylation of the less substituted pyridyl ring at the β-site of aryl-1,8-naphthyridines, affording the desired products in moderate to excellent yields upon isolation. The method proceeds under transition-metal-free conditions in an atom- and step-economic
通过使用丰富且可持续的醇作为烷基化试剂,已证明了一种新的直接烷基化方法。该方法使得在芳基-1,8-萘啶的β位上的取代较少的吡啶基环选择性烷基化,在分离时以中等至优异的产率提供期望的产物。该方法在无过渡金属条件下以原子经济和阶梯经济的方式进行,并释放出水作为唯一的副产物。机理研究表明该反应经历了氢转移介导的烷基化模式。