Studies in the Cyanine Dye Series. IX. 4, 4'-Pyridocyanines and 4-Pyrido-4'-cyanines

RH Sprague, LGS Brooker

文献索引：Sprague; Brooker Journal of the American Chemical Society, 1937 , vol. 59, p. 2697

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被引用次数: 12

摘要

1 not been described hitherto, but theoretically might be formed by thecondensation of 4- iodopyridine alkyl iodides with y-picoline quaternary salts. We have accordingly made attempts to prepare the methiodide and ethiodide of 4-iOd0-pyridine by heating 4- chloropyridine with the appropriate alkyl iodide. From the now readily available 4- hydroxypyridine, 1 the 4-chloro compound was prepared by the method of Koenigs and ...