4,4′,4″-Trimethyl-2,2′:6′,2″-terpyridine by Oxidative Coupling of 4-Picoline
نویسندگان
چکیده
منابع مشابه
4,4′,4″-Trimethyl-2,2′:6′,2″-terpyridine by Oxidative Coupling of 4-Picoline
Alkylated terpyridine ligands are an increasingly important component of catalysis and dyes but are costly because their synthesis is challenging and often low-yielding. We report an improved method for the Pd/C-catalyzed dehydrogenative coupling of 4-picoline to form the bi- and terpyridine. The addition of MnO2 improves the yield of the reaction, making the reaction useful on a large scale (u...
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متن کاملDetermination of pyridine, 2-picoline, 4-picoline and quinoline from mainstream cigarette smoke by solid-phase extraction liquid chromatography/electrospray ionization tandem mass spectrometry.
The present paper describes the development and validation of a new reversed-phase liquid chromatography-electrospray ionization tandem mass spectrometric method (RP-HPLC-ESI-MS/MS) for simultaneous determination of pyridine, 2-picoline, 4-picoline and quinoline from mainstream cigarette smoke. Liquid-liquid extraction followed by solid-phase extraction was applied to extract the target analyte...
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In the title compound, C(17)H(15)FO(2)S, the O atom and the 4-fluoro-phenyl group of the 4-fluoro-phenyl-sulfinyl substituent lie on opposite sides of the plane of the benzofuran; the 4-fluoro-phenyl ring is almost perpendicular to this plane, making a dihedral angle of 88.99 (4)°. The crystal structure exhibits inter-molecular C-H⋯O hydrogen bonds and C-H⋯π inter-actions between the methyl H a...
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In the title compound, C(17)H(15)BrO(2)S, the 4-bromo-phenyl ring makes a dihedral angle of 87.78 (5)° with the mean plane of the benzofuran fragment. In the crystal, mol-ecules are linked by weak C-H⋯O hydrogen bonds, and by weak inter-molecular C-S⋯π [3.399 (2) Å] and C-Br⋯π [3.797 (2) and 3.757 (2) Å] inter-actions.
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ژورنال
عنوان ژورنال: The Journal of Organic Chemistry
سال: 2014
ISSN: 0022-3263,1520-6904
DOI: 10.1021/jo501925s