Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation and NMR Spectroscopy of Selected Polychlorinated meta‐Terphenyls
The preparation of eight polychlorinated terphenyl (PCT) congeners by Suzuki coupling from readily available starting materials is described: the dichloride 3,3′′‐dichloro‐meta‐terphenyl (3), the tetrachlorides 2,2′′3,3′′‐tetrachloro‐meta‐terphenyl (5a), 2,2′′4,4′′‐tetrachloro‐meta‐terphenyl (5b), 2,2′′,5,5′′‐tetrachloro‐meta‐terphenyl (5c), and 3,3′′,4,4′′‐tetrachloro‐meta‐terphenyl (5d) and the pentachlorides 3,4,5′,3′′,4′′‐pentachloro‐meta‐terphenyl (8), 2,4,5′,3′′,4′′‐pentachloro‐meta‐terphenyl (9), and 2,4,5′,3′′,5′′‐pentachloro‐meta‐terphenyl (10), the latter being obtained by a combinatorial approach to thesemeta‐terphenyl derivatives. The structure elucidation of these model compounds rests largely on NMR spectroscopy which allows unambiguous assignment of the substitution pattern.
Preparation and NMR Spectroscopy of Selected Polychlorinated meta‐Terphenyls
The preparation of eight polychlorinated terphenyl (PCT) congeners by Suzuki coupling from readily available starting materials is described: the dichloride 3,3′′‐dichloro‐meta‐terphenyl (3), the tetrachlorides 2,2′′3,3′′‐tetrachloro‐meta‐terphenyl (5a), 2,2′′4,4′′‐tetrachloro‐meta‐terphenyl (5b), 2,2′′,5,5′′‐tetrachloro‐meta‐terphenyl (5c), and 3,3′′,4,4′′‐tetrachloro‐meta‐terphenyl (5d) and the pentachlorides 3,4,5′,3′′,4′′‐pentachloro‐meta‐terphenyl (8), 2,4,5′,3′′,4′′‐pentachloro‐meta‐terphenyl (9), and 2,4,5′,3′′,5′′‐pentachloro‐meta‐terphenyl (10), the latter being obtained by a combinatorial approach to thesemeta‐terphenyl derivatives. The structure elucidation of these model compounds rests largely on NMR spectroscopy which allows unambiguous assignment of the substitution pattern.
Preparation and NMR Spectroscopy of Selected Polychlorinated meta‐Terphenyls
Hopf, Henning (Autor:in) / Carjila, Andreia (Autor:in) / Ernst, Ludger (Autor:in)
CLEAN – Soil, Air, Water ; 35 ; 433-437
01.11.2007
5 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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