Dehydrothiotoluidin, Its Isomers, Homologues, Analogues, and Derivatives

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Excerpt from Dehydrothiotoluidin, Its Isomers, Homologues, Analogues, and Derivatives: Dissertation, Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in the Faculty of Pure, Science of Columbia University The chemistry of the organic sulphur compounds is one of the widest and most interesting divisions of the broad and attractive extent of the science, and in variety of properties, multiplicity of applications, and novelty of the reactions involved, is at least equal to, and certainly is excelled by no other. No matter what we choose as the criterion of our judgment we can meet all of the requirements without passing the boundaries of this field, be it medicinal, perfumes, dyes, explosives, or plastics, there is hardly a reaction that does not find its analogue, and in addition there are many here that can not be duplicated elsewhere. In the chemistry of the dyestuffs, however, the sulphur compounds are pre-eminent. Of all the glorious colors which the chemist has contributed to mankind in his efforts to duplicate the iridescent beauty of the rainbow, the most beautiful and permanent are found in this group, the sulphides, the thioindigos, the thiazines, the thiazoles, and many others, the mere enumeration of which with their classes and sub-classes would fill a volume. Among the most interesting of all from both academic and commercial standpoints are the five-membered nitrogen and sulphur heterocycles, more particularly the six-five bicyclic ones, or benzothiazoles. Of these the simplest is benzothiazole, or methenyl base as it is termed by Hofmann, to which the indicated structure is assigned. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.