Solvent- and chromatography-free amination of π-deficient nitrogen heterocycles under microwave irradiation. A fast, efficient and green route to 9-aminoacridines, 4-aminoquinolines and 4-aminoquinazolines and its application to the synthesis of the drugs amsacrine and bistacrine
作者:Matteo Staderini、Nieves Cabezas、Maria Laura Bolognesi、J. Carlos Menéndez
DOI:10.1016/j.tet.2012.11.083
日期:2013.1
very broad scope in terms of amine structure (aromatic, linear primary aliphatic, α-branched primary aliphatic, secondary aliphatic and diamines). Workup consisted of a simple washing with water and purification could be achieved by crystallization, avoiding the use of organic solvents in extraction and chromatographic purification steps. This protocol provides a solution to the long-standing synthetic
在2当量苯酚的存在下,用胺对9-氯ac啶,4-氯喹啉和4-氯喹唑啉等分子混合物与胺进行聚焦微波辐照,可以实现胺化杂环的一般,快速和高产率合成,胺结构(芳族,线性伯脂肪族,α-支化伯脂肪族,仲脂肪族和二胺)。后处理包括简单的水洗和结晶纯化,避免在萃取和色谱纯化步骤中使用有机溶剂。该协议为解决长期合成问题提供了解决方案,该问题实现了一种实用有效的方法来胺化π不足的氮杂环以用于药物化学应用。