Excerpt from Organic Chemistry, Or, Vol. 2: Chemistry of the Carbon Compounds
The second volume of the present work was published in its last edition in 1905 by me in collaboration with Professor Georg Schroeter. Dr Schroeter, who had also rendered extremely able assistance in the production of the seventh and succeeding editions, was appointed a year ago to the distinguished position of Professor of Chemistry at the Veterinary College in Berlin. Collaboration in the preparation of the present second volume of the treatise was then undertaken by his successor at the Chemical Institute, Dr Hans Meerwein, Assistant Instructor in Organic Chemistry.
Since the publication of the second volume seven years have elapsed, during the last few of which the book was out of print. In the course of these latter years the amount of new subject-matter has undergone a remarkable increase. Consequently, the present volume, in comparison with the last edition, has had to be enlarged by more than nine sheets, in spite of the adoption of a larger size of page, as otherwise the whole character of the edition would have been altered.
As in previous editions, a list of the most important interpolations and additions is given below.
Tri-, tetra-, penta-, hepta-, octo-, and nonocyclic compounds. - Special attention is called to the ring expansion by the action of nitric acid on cyclo-alkyl methylamine as a new general reaction. The tetra-methylene group has been supplemented principally by the inclusion of the simplest examples: cyclobutane, cyclobutene, and cyclobutanone. The simplest saturated, and unsaturated, carbohydrates, with eight-membered carbon rings, are obtained by the transformation of pseudo-pelletierin, and have been very closely examined. By the recognition of the constitution of india-rubber as a polymeric dimethyl, cyclo-octadiene, the group of octocarbocyclic compounds has gained considerably in interest.
The class of nonocarbocyclic compounds has had to be added.
Single-nucleus aromatic substances. - The historical account of the theory of the aromatic compounds has been supplemented at essential points (p. 28).
Special attention is directed to the extremely consistent splitting up of benzene and its homologues by the oxidising action of ozone.
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