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Synthesis of 4,4'-bipyridine from pyridine with electrolysis steps
由吡啶电解合成4, 4'-联吡啶
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By: Smirnov, Yu. D.; Pavlichenko, V. F.; Tomilov, A. P. Electrochem. reduction of pyridine in benzene or toluene gave 1,1',4,4'-tetrahydro-4,4'-bipyridine, which was oxidized by SO2 to give 4,4'-bipyridine. Yields of 60-63% were obtained when the oxidation was carried out at -25 to -30°. The 2,2' and 2,4' isomers were byproducts. Keywords: electrochem reduction pyridine; bipyridine; oxidation tetrahydrobipyridine sulfur dioxide |
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(2025-6-4)
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