A novel tandem method to synthesize 2-azaaryl indoline promoted by LiN(SiMe3)2 from 2-azaaryl methyl amine and 2-fluoro benzyl bromides was developed. Mechanistic investigation indicated that this tandem cyclization was initiated by selective benzyl C-SN2 substitution followed by an intramolecular SNAr reaction. Diverse 2-azaaryl indoles could also be obtained via simple functional transformations
开发了一种在LiN(SiMe 3 ) 2 催化下,由2-氮杂芳基甲胺和2-氟苄基溴串联合成2-氮杂芳基二氢吲哚的新方法。机理研究表明,这种串联环化是通过选择性苄基CS N 2 取代和随后的分子内S N Ar 反应引发的。通过简单的功能转化也可以获得多种2-氮杂芳基吲哚。
Base-Promoted Tandem Synthesis of 2-Azaaryl Tetrahydroquinolines
作者:Shuguang Chen、Langxuan Yang、Yongjia Shang、Jianyou Mao、Patrick J. Walsh