Quinoxalines. Part 13: Synthesis and mass spectrometric study of aryloxymethylquinoxalines and benzo[b]furylquinoxalines
作者:Ines Starke、Gerhard Sarodnick、Vladimir V. Ovcharenko、Kalevi Pihlaja、Erich Kleinpeter
DOI:10.1016/j.tet.2004.05.064
日期:2004.7
aryloxymethylquinoxalines, benzo[b]- and naphtho[2,1-b]furylquinoxalines, possessing potential biological activity, was prepared, characterized by IR and NMR spectroscopy and their electron ionization (EI) mass spectra studied in detail. The aryloxymethylquinoxalines were obtained by reacting halogenomethylquinoxalines with bifunctional O-nucleophiles. The benzo[b]furylquinoxalines and naphtho[2,1-b]furylquinoxalines
制备了一系列具有潜在生物活性的新型芳氧基甲基喹喔啉,苯并[ b ]-和萘并[ 2,1- b ]呋喃基喹喔啉,并通过红外光谱和核磁共振谱进行了表征,并对其电子电离(EI)质谱进行了详细研究。通过使卤代甲基喹喔啉与双官能O-亲核试剂反应获得芳氧基甲基喹喔啉。所述苯并[ b ] furylquinoxalines和萘并[2,1- b通过两个途径制备]呋喃基喹喔啉,这两个途径在合成中涉及的两个环化步骤的顺序上是不同的。通过精确的质谱测量确定了通过EI质谱法获得的离子的组成,并通过B / E链接扫描和碰撞诱导的离解阐明了裂解途径。研究的化合物的质谱行为与可能的OH损失有关 自由基被证明是非常有特色的。