Isomer specific synthesis using the Suzuki-coupling. Polychlorinated terphenyls as standards for environmental analysis
作者:M. Bahadir、A. Pieper、R. Vogt、H. Wichmann、J. Grunenberg、H. Hopf
DOI:10.1016/s0045-6535(02)00647-1
日期:2003.3
of benzeneboronic acids with dibromobenzenes mostly in good yields, as described by the synthesis of following PCT congeners: p-PCT (3,3("),5,5(")-tetrachloro-, 2,2("),4,4(")-tetrachloro-, 2('),3,3("),5,5(")-pentachloro-); m-PCT (3,3("),5,5(")-tetrachloro-) and o-PCT (3,3("),5,5(")-tetrachloro-). The terphenyl congeners were characterized by NMR (1H, 13C)- and FT-IR-spectroscopy. Their purity was checked
确定的多氯联苯(PCT)单一同类物作为参考标准是开发用于在环境中测定和定量分析方法的前提。描述了通过应用Suzuki-偶联反应为环境分析目的的PCT的选择性合成。在该偶联方法的易于修改的标准反应条件下,PCT可以通过苯硼酸与二溴苯的反应以高收率反应获得,如以下PCT同系物的合成所述:p-PCT(3,3(“),5, 5(“)-四氯-,2,2(”),4,4(“)-四氯-,2('),3,3(”),5,5(“)-五氯-); m-PCT(3,3(“),5,5(”)-四氯-)和o-PCT(3,3(“),5,5(”)-四氯-)。通过NMR(1H,13C)和FT-IR光谱。通过GC / MS分析检查其纯度。比较了实验结果和量子化学计算的FT-IR光谱,结果表明,可以通过典型的吸收光谱确定三联苯同类物中的氯取代模式。