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CARBAZOL, C12H9N

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Originally appearing in Volume V05, Page 304 of the 1911 Encyclopedia Britannica.
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CARBAZOL, C12H9N , a chemical constituent of See also:coal-See also:tar and crude See also:anthracene. From the latter it may be obtained by See also:fusion with See also:caustic potash when it is converted into carbazol-See also:potassium, which can be easily separated by distilling off the anthracene. It may be prepared synthetically by passing the vapours of diphenylamine or See also:aniline through a red-hot See also:tube; by See also:heating diorthodiaminodiphenyl with 25 % sulphuric See also:acid to 200° C. for 15 See also:hours; by heating orthoaminodiphenyl with See also:lime; or by heating thiodiphenylamine with See also:copper See also:powder. It is also obtained as a decomposition product of See also:brucine or See also:strychnine, when these alkaloids are distilled with See also:zinc dust. It is easily soluble in the See also:common organic solvents, and crystallizes in plates or tables melting at 238° C. It is a very See also:stable See also:compound, possessing feebly basic properties and characterized by its ready sublimation. It distils unchanged, even when the operation is carried out in the presence of zinc dust. On being heated with caustic potash in a current of carbonic acid, it gives carbazol carbonic acid C12H$N• COOH; melted with oxalic acid it gives carbazol See also:blue. It dissolves in concentrated sulphuric acid to a clear yellow See also:solution. The potassium See also:salt reacts with the alkyl iodides to give N-substituted alkyl derivatives. It gives the See also:pine-shaving reaction, in this respect resembling See also:pyrrol (q.v.).

End of Article: CARBAZOL, C12H9N

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