Transition-Metal-Free Amination of Pyridine-2-sulfonyl Chloride and Related <i>N</i>-Heterocycles Using Magnesium Amides
作者:Moritz Balkenhohl、Cyril François、Daniela Sustac Roman、Pauline Quinio、Paul Knochel
DOI:10.1021/acs.orglett.6b03703
日期:2017.2.3
A new transition-metal-free amination of pyridine-2-sulfonyl chloride and related N-heterocycles using magnesium amides of type R2NMgCl·LiCl is reported. Additionally, the directed ortho-magnesiation of pyridine-2-sulfonamides using TMPMgCl·LiCl was investigated. Reaction of the magnesium intermediates with various electrophiles and subsequent amination using magnesium amides led to a range of 2,3-functionalized
的吡啶-2-磺酰氯的新过渡金属-自由胺化和相关Ñ -heterocycles使用类型R的镁酰胺2 NMgCl·LiCl报道。另外,研究了使用TMPMgCl·LiCl对吡啶-2-磺酰胺的定向邻位放大。镁中间体与各种亲电试剂的反应以及随后使用氨基酰胺进行的胺化反应产生了一系列的2,3-官能化吡啶。另外,进行提供氮杂吲哚和氮杂咔唑的环化反应。