A Unified Strategy for the Synthesis of β-Carbolines, γ-Carbolines, and Other Fused Azaheteroaromatics under Mild, Metal-Free Conditions
作者:Dilipkumar Uredi、Damoder Reddy Motati、E. Blake Watkins
DOI:10.1021/acs.orglett.8b02441
日期:2018.10.19
An efficient, unified approach for the synthesis of β-carbolines, γ-carbolines, and other fused azaheteroaromatics has been realized under metal-free conditions, from propargylic amines and (hetero)aromatic aldehydes. This unified strategy provides β- and γ-carbolines as well as a range of fused azaheteroaromatics with a broad substrate scope and excellent functional group compatibility. The formal
在无金属条件下,已经从炔丙基胺和(杂)芳族醛合成了一种高效,统一的方法,用于合成β-咔啉,γ-咔啉和其他稠合的氮杂杂环芳烃。这种统一的策略可提供β-和γ-咔啉以及一系列稠合的氮杂杂芳烃,具有广泛的底物范围和出色的官能团相容性。从商业上可获得的材料进行一锅反应,可以克级(3a)形式完成氧代脯氨酸D和G的正式合成(以前报道的最短的3a路线是5个步骤)。进行了将亚胺中间体3aa转化为β-咔啉3a的NMR研究,结果表明该反应通过丙二烯中间体进行。