Publisher's Synopsis
Excerpt from Anthracene and Anthraquinone
Anthracene was first discovered in 1832 by Dumas and Laurent, who obtained it from the higher boiling fractions of coal tar and named it paranaphthalene, although Laurent, who investigated the substance more closely a few years later, changed the name to anthracene. In 1857 Fritzsche also obtained anthracene from coal tar, and seems to have prepared it in a purer state than Dumas and Laurent; and a few years later, in 1862, Anderson also described its isolation and the preparation from it of several derivatives. In 1866 the first synthesis of anthracene was published, as in this year Limpricht obtained it by heating benzyl chloride with water at and Berthelot showed that anthracene is obtained by the pyrogenic de composition oi many simpler hydrocarbons.
About this period some doubt was thrown on the belief that anthracene was really a single chemical compound, and Fritzsche regarded it as a mixture of two substances, which he named photene and phosene. That anthracene should be regarded as a mixture is hardly surprising in View of the fact that it is not a particularly easy compound to obtain in a state of purity, and at the period in. Question very little was known of the constituents of coal tar.
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