可疑物质中2-(邻甲苯基)-2-(甲胺基)环己酮和2-(苯基)-2-(乙胺基)环己酮的检测

Structural Confi rmation of 2-(o-methylphenyl)-2-(methylamino)Cyclohexanone and 2-(phenyl)-2-(ethylamino)Cyclohexanone in Seized Drugs

本文对近期禁毒部门缴获的白色晶体和无色液体利用气相色谱-质谱仪、液相色谱-四极杆飞行时间串联质谱仪、核磁共振和傅里叶变换红外光谱技术进行分析。对样品的主要成分检测发现,两种物质的谱图与现有的数据库没有匹配的数据,且具有高度的相似性,通过液相色谱-四极杆飞行时间质谱测得它们的精确质量数相同,但两种物质具有不同的保留时间,对两种物质液相色谱-四极杆飞行时间质谱进行二级质谱分析发现,白色晶体的二级质谱中有甲苯基碎片,白色液体的二级质谱中有苯基碎片和乙胺基碎片,故推断两种物质为同分异构体。利用核磁共振对两种物质的质子归属和碳的类型进行分析,利用红外光谱对羰基、胺基等官能团进行确认,白色晶体中的主要成分为2-(邻甲苯基)-2-(甲胺基)环己酮,无色液体中的主要成分为2-(苯基)-2-(乙胺基)环己酮。两种物质系目前滥用最为活跃的苯环己哌啶类新精神活性物质,但相关数据在国内文献中未见报道,缺少相关的结构数据参考。本文全面地对两种物质的结构数据进行检测,为打击新型毒品犯罪及两种物质的管制提供参考。

The structures of the effective components in the white crystals and colorless liquids,which were seized by Luzhou drug enforcement department,were analyzed by gas chromatography-mass spectrometry,liquid chromatographyquadrupole time-of-flight tandem mass spectrometer,nuclear magnetic resonance and Fourier transform infrared spectroscopy.Through sample analysis,it was found that the spectrograms of the two substances had no matching data with the existing database,and had a high degree of similarity.The accurate molecule mass of the two substances measured by liquid chromatography-quadrupole time-of-flight tandem mass spectrometer were the same,but the two substances have different retention times.In the next step,after analyzed by liquid chromatography-quadrupole time-of-flight tandem mass spectrometer and secondary mass spectrometry,it was found that in the secondary mass spectrum of white crystals,there were toluene fragments,and in the secondary mass spectrum of white liquids,there were phenyl fragments and ethylamine fragments,so it was inferred that the two substances were isomers.The proton attribution and carbon type of the two substances were analyzed by nuclear magnetic resonance and the carbonyl,amino and other functional groups were confi rmed by infrared spectrum.The main component in white crystals was 2-(o-methylphenyl)-2-(methylamino)cyclohexanone,and the main component in colorless liquid was 2-(phenyl)-2-(ethylamino)cyclohexanone.The two substances are the new psychoactive substances of phenylcyclohexylpiperidine with the most active abuse currently,but the relevant data have not been reported in domestic literature,and there is a lack of relevant structural data reference.This paper comprehensively tested the structural data of the two substances,providing reference for combating new drug crimes and controlling the two substances.