investigated and it was found that they show a characteristic GC-MS pattern of C2-alkylcarbazoles. The ethyl- and dimethylcarbazoles used as analytical standards have been prepared by palladium-catalyzed synthesis.
研究了来自不同来源的石油样品,发现它们显示出 C 2 -烷基
咔唑的特征 GC-MS 模式。用作分析标准的乙基
咔唑和二
甲基咔唑是通过
钯催化合成制备的。