Abstract
DURING an investigation, previously referred to1, of the nitrogenous bases extracted by sulphuric acid from the ‘benzol absorbing oil’ fraction of vertical retort coal tar, a tertiary base has been isolated which has been proved to be 2:3:4:6-tetramethylpyridine, a compound which has not hitherto been reported as a constituent of coal tar. This compound, however, has been previously isolated from Fushun shale oil by Eguchi2, and from Scottish shale oil by Benzie and Milne3.
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References
Nisbet, H. B., and Pryde, A. M., Nature, 167, 862 (1951).
Eguchi, T., Bull. Chem. Soc. Japan, 3, 237 (1928).
Benzie, R. J., and Milne, J. N. (Ph.D. theses, Univ. of Edinburgh, 1949). Benzie, Milne and Nisbet, Proc. 2nd International Oil Shale and Cannel Coal Conference (Glasgow, 1950).
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NISBET, H., PRYDE, A. Isolation of 2:3:4:6-Tetramethylpyridine from Coal Tar. Nature 168, 832–833 (1951). https://doi.org/10.1038/168832b0
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DOI: https://doi.org/10.1038/168832b0
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