Some Constituents of n-Hexane Soluble Portion of γ-Fraction Obtained from Oyubari Coal (I)

The n-hexane soluble portion of γ-fraction was obtained from Oyubari coal (85.9%C). The following solid substances were separated from the n-hexane soluble portion.Methyl derivatives of picene (0.3% coal) were obtained by evaporating the n-hexane solution and the gelchromatographic fractionation of n-hexane extract and the separated methyl derivatives of picene were confirmed to be the mixture of some of mono-, di-, tri-, and tetramethyl picene by their IR-, UV-, NMR-, mass-spectra, ultimate analyses and melting points. The mixtures of n-paraffines of C24 to C30 (1.4×10-4% coal) were obtained by the gelchlomatographic fractionation of the n-hexane extract and were confirmed by their IR-, NMR-, mass-spectra, ultimate analyses and melting points.